Cutting costs is rarely the only reason UK businesses outsource their customer service. More often, they are looking to secure longer opening hours, add capacity during busy periods, access specialist skills, or build a team that can scale up immediately without months of recruitment.
Once another company starts speaking to your customers, though, it becomes part of the customer experience. A capable Outsourced Contact Centre can work as a genuine customer engagement hub, whereas a poor choice can leave you dealing with weak service, security problems, or a contract that is difficult to leave.
You should never pick a Business Process Outsourcer (BPO) just by looking at their prices. First, work out what you need, then compare how each supplier would staff the service, where those people would work, which systems they would use, and how your customer data would be protected.
The following six steps give you a much stronger basis for comparing providers.
Step 1: Define Your Operational Model (Dedicated vs. Shared Agents)
Before contacting suppliers, look at the work your team is actually handling to determine how many customer contacts arrive each week, when the busiest hours are, and, more importantly, how much knowledge or judgement each type of enquiry requires.
A dedicated model gives you agents who work only on your account. They have more time to learn your products, processes and tone of voice, which can make this model a better fit for technical enquiries, regulated conversations, complaints or high-value customers.
Shared agents handle work for several clients. You may pay by interaction, minute or another usage measure, so this approach can suit businesses where demand rises and falls sharply.
Take a retailer that receives three times its normal contact volume around Black Friday. Paying for a large dedicated team throughout quieter months may make little sense. A business handling complex financial complaints would have a very different requirement, because agents need deeper training and continuity.
Analyse at least a few months of contact data before requesting prices. Separate routine questions from cases that need specialist knowledge, then compare busy periods with quieter weeks. This gives suppliers something useful to plan around rather than a rough monthly average.
Scalability deserves close attention too. If volumes jump by 30% after a promotion, find out how the supplier would add trained people and how long that would take. The same question applies in reverse when volumes fall.
If you are exploring customer care outsourcing, this workload review should happen before you discuss headcount. It helps you avoid paying for capacity you rarely use or choosing a shared model that cannot cope with difficult enquiries.
The skills also change with the type of campaign. Service teams may spend much of their day resolving complaints and helping existing customers, while expert telemarketing staff focus on generating more leads through outbound conversations.
Still deciding whether to outsource at all? Our Outsourced Contact Centre vs. In-House comparison can help you settle that question before you start speaking to providers.
Step 2: The "Right-Shoring" Strategy: Location and Language
There is little value in treating location as a straight choice between a UK call centre and an overseas one; instead, the better question is where each type of customer conversation should be handled.
This is where right-shoring comes in. You match the location to the work, taking account of customer expectations, working hours, language needs, cost and the sensitivity of the enquiry.
Onshoring, also known as domestic outsourcing, keeps the team in the UK and may suit complaints, regulated conversations, or services where familiarity with UK language and everyday references plays a big part in the call.
Nearshoring can give you access to teams in locations such as Eastern Europe, while time-zone-aligned markets such as South Africa are also considered by UK businesses. Offshoring to locations such as India or the Philippines can provide larger pools of agents and extended coverage for high-volume work.
You do not have to place every conversation in the same country; a combined setup might keep difficult escalations with a UK team while another team manages first-line enquiries or overnight support.
Listen to the people who would actually serve your customers before making a decision. A sales presentation about “excellent English” tells you very little. Have shortlisted suppliers demonstrate how agents deal with UK regional accents, informal language and the kinds of questions your customers genuinely ask.
The same care is needed for multilingual services. Check how fluency is assessed and who reviews calls in each language, as linguistic and cultural differences become much more visible when a conversation involves frustration, humour, or a complaint.
If customer information will be accessed from another country, bring your data protection and security teams into the decision early. After all, location dictates your compliance and security risks just as much as your budget.
Step 3: Evaluating Technology, AI Integrations, and Omnichannel Scope
Do not settle for a provider telling you it has a “modern platform”. Get them to show you how their technology would work with yours.
Start by looking at how their tech fits with yours. If you keep your customer records in Salesforce, Zendesk, or Shopify, find out if their agents can work directly from those systems, or if they’ll be forced to manually move data back and forth across different screens.
Too many disconnected systems slow people down and make mistakes easier. They also make it harder for an agent to understand what has already happened with a customer.
Omnichannel support needs the same level of scrutiny. A customer who sends an email on Monday and starts a WhatsApp conversation on Tuesday should not have to explain the whole issue again because the two channels sit in different systems.
If social channels are becoming part of your service mix, our Social media customer service guide covers the operational side in more detail. It is also worth comparing Omnichannel vs Single-Channel Outsourcing before deciding how many channels a supplier needs to manage.
AI now belongs in these conversations as well. According to ContactBabel’s 2026 UK Contact Centre Decision Makers’ Guide, 78% of respondents placed AI among their top five technology investment priorities for the next two years.
The interesting part is what a supplier actually does with the technology. Agent Assist tools, for example, can bring up relevant knowledge while an adviser is speaking to a customer. Conversation intelligence can help supervisors spot repeated complaints or areas where agents need more coaching.
A live demonstration will tell you much more than a list of features. Give the supplier a realistic customer scenario and watch how the agent, CRM and AI tools work together. Also establish what happens when an automated suggestion is wrong.
You must also evaluate their operational resilience. If the primary contact centre loses connectivity or a critical system fails, how is the workload redirected? A robust disaster recovery and business continuity plan should provide a clear and immediate answer.
Step 4: Assessing Employee Engagement (The Hidden Driver of CX)
You can buy excellent software and still end up with poor service if the people using it keep leaving.
Agent turnover deserves a direct conversation during procurement. Frequent departures mean more recruitment and more people going through training, which can make it harder to keep customer service consistent.
When choosing an outsourcing partner, the CCMA recommends looking closely at their Employee Value Proposition. Their point is simple but highly effective: pay just as much attention to how the supplier treats its employees as you do to the promises they make to you.
Instead of accepting a generic company-wide figure, ask for the attrition rate of the specific site or team that will be handling your account. It is also wise to check the average agent tenure, particularly if your service requires complex product knowledge that takes months to build.
Career paths often reveal a lot about company culture. If team leaders, trainers and quality managers regularly come from frontline roles, experienced employees have somewhere to progress. If nearly every supervisor is recruited externally, ask why.
Employee wellbeing deserves close attention for similar reasons. Contact centre staff often spend hours managing complaints or navigating difficult customer situations, so it is essential to understand what support systems are in place and how their managers handle sustained pressure.
Never underestimate the value of a site visit. Take the time to observe the work environment, speak with a few agents if permitted, and ask what the coaching process actually feels like from their perspective.
Diversity and inclusion also need to show up in day-to-day management, not just in an HR policy document. Looking at career progression data and manager training will give you a much clearer idea of how the organisation really treats its staff.
Lastly, sector experience is crucial when the work gets complex. If a provider claims to have domain knowledge, ask them to prove it by explaining exactly how they train people for your industry and how they verify that expertise.
We firmly believe that contact centre agents are the true heroes of customer experience. Customers may never see the systems or management structure behind a contact centre, but they notice very quickly when the person helping them is confident and well trained.
Step 5: Validating UK GDPR, ISO 27001, and Security Standards
Because a call centre may need access to names, addresses, order histories, account records, and sometimes payment information, security needs to be rigorously checked before you provide live customer data or system access.
There is a sizable gap in provider checks across UK businesses: the UK Government’s 2025/2026 Cyber Security Breaches Survey found that only 15% of businesses formally reviewed cyber risks from their immediate suppliers, while only 6% reviewed their wider supply chain.
For a typical outsourced customer service arrangement, your business will usually act as the Data Controller and the BPO as the Data Processor when it handles personal data under your instructions. UK GDPR Article 28 requires a written controller-processor contract. It should state that the BPO only processes data on documented instructions, keeps authorised staff under confidentiality duties, applies appropriate security measures and obtains approval before appointing sub-processors.
Because the contract must also cover the return or deletion of personal data when the agreement ends, security due diligence becomes a critical, non-negotiable part of supplier selection. You should know who can access your systems, from which devices and under what controls.
ISO/IEC 27001 is one useful credential to check because it sets requirements for an information security management system. If a supplier claims certification, ask for the certificate and check the scope rather than accepting a logo in the proposal.
COPC relates more closely to contact centre and customer operations performance. Treat it as supporting evidence of how a provider runs its operation, rather than a substitute for your own data protection checks.
Payment handling requires a conversation of its own. If agents will be storing, processing, or transmitting payment card information, you must verify the supplier’s PCI compliance and ask how they prevent card data from appearing where it shouldn’t. As a baseline, ensure they strictly adhere to the security requirements set out by PCI DSS.
Beyond certificates, look at daily information security measures by checking how access rights are granted, whether multi-factor authentication is used, and whether USB storage, printing, or local downloads are restricted.
For home-based agents, find out which devices they use and how connections are secured. Clean desk rules and secure VPN access are only useful when the outsourced partner can show how those controls are enforced.
Incident handling protocols must also be clearly defined long before launch. If customer data is exposed outside of standard working hours or over a weekend, you need to know exactly who will notify your team, how quickly system access can be blocked, and what level of detail you will receive regarding the breach.
Step 6: Mastering the RFP, SLAs, and the Exit Strategy
By this point, you should know enough about your own operation to write a useful procurement document.
If you have a long list of potential suppliers, a Request For Information (RFI) is a great way to narrow the field. Once you have a shortlist, a Request For Proposal (RFP) ensures every provider is quoting against the exact same requirements.
Your RFP needs to cover the details that actually shape the service: contact volumes, peak periods, opening hours, channels, staffing models, locations, tech integrations, security, and pricing. Try to provide real numbers wherever possible, because vague forecasts will only result in vague proposals and unexpected costs down the line.
Once you are ready to contract, Service Level Agreements (SLAs) turn those expectations into hard, measurable commitments. While speed is important, it should always be balanced against the actual quality of the service.
Take Average Handle Time (AHT) as an example. It tells you how long interactions take, but if the contract puts too much pressure on that single metric, agents might feel rushed to end difficult calls before the customer’s problem is truly solved.
Metrics like First Contact Resolution (FCR) and Customer Satisfaction (CSAT) often give you a much truer picture of whether people are getting the help they need. Depending on your business, your Key Performance Indicators (KPIs) might also track response times, complaint volumes, and quality scores.
Before anyone signs anything, make sure you agree on exactly how every metric is calculated. Reporting transparency is so much easier when everyone knows where the data comes from, what gets excluded, and how frequently the results are reviewed.
Quality Assurance (QA) also deserves a formal place in the contract. Your team and the supplier should regularly review the same calls or messages side-by-side using the exact same criteria, allowing you to iron out any differences in how you score them.
Don’t let “continuous improvement” remain a vague promise from a sales pitch; instead, build it into your regular reviews. If a specific delivery issue is triggering hundreds of calls every month, you want a proactive partner who will flag the root cause to you, rather than just quietly billing you for the extra volume.
Finally, the last part of your contract needs to deal with how you leave.
Vendor lock-in is a real risk if your customer data, telephone numbers, training materials, or key processes become too deeply tied into a single supplier’s systems. A clear Exit Strategy should map out exactly how those assets will be returned or transferred, how access will be revoked, and what level of support the supplier must provide during a handover.
From a compliance perspective, ICO guidance dictates that your contract must explicitly state what happens to personal data when the agreement ends, whether that means safely returning it to you or permanently deleting it.
Read through the termination charges and notice periods while the relationship is still new and positive. If the exit terms look painful before you’ve even signed, they certainly won’t feel any better three years down the line.
FAQs
Begin with the people who will actually handle your customers. Ask where their agents are based, whether they will be dedicated solely to your account, how they are trained, and what their staff turnover rate looks like.
Next, focus on the structural elements of the service that are difficult to change once you go live. You need definitive answers regarding system integrations, data security protocols, reporting transparency, service level targets, pricing structures, and the exact terms for ending the contract.
Finally, ask the provider to describe a client relationship that went wrong and explain what they changed as a result. Their honest response will tell you far more about their problem-solving culture than any polished case study ever could.
There is no sensible fixed number of weeks for every transition: a small team handling straightforward enquiries may move fairly quickly, while a regulated service with several systems, channels, and training requirements will take longer.
A standard transition includes knowledge transfer, technical setup, recruitment, training, testing, and a controlled launch. Trying to cut corners on these stages just to hit an aggressive deadline usually means you are simply pushing the risk into your first few weeks of live service.
A phased launch is often easier to manage, as moving part of the contact volume first gives both sides a chance to find gaps before the outsourced partner handles the full workload.
Partnerships often fail because they are built on flawed assumptions, whether that means inaccurate contact forecasts, rushed training, or a staffing model that just doesn’t suit the reality of your customer enquiries.
Other problems tend to emerge after the service goes live. Product updates might occur without the agents ever being told, reporting might hide recurring operational issues, or the contract might reward short calls rather than actual problem resolution.
The best way to protect your business is through absolute clarity before you sign and active engagement after you launch. Make sure both sides understand exactly what good service looks like, how it will be measured, and what steps will be taken if performance begins to drop.
