AI voice agents · Call & contact centres

Handle overflow without hiring. AI agents for call and contact centres.

Queue times spike. Callers abandon. Your SLA drops. Hiring takes weeks and attrition runs at 30%. CallAgents AI absorbs overflow calls instantly, handles routine enquiries and captures details for callback, keeping your SLAs green without growing headcount.

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What to expect

What good looks like.

An illustrative example of a call handled by your agent. We'll publish verified customer results here as our early customers go live.

A customer rings while your team is busy. The agent answers in seconds, captures what they need, books them straight into your calendar and texts a confirmation, all without anyone leaving the front desk.

Illustrative example
The problem

Every missed call is lost revenue.

Most callers won't leave a voicemail. They simply ring your competitor instead.

Voicemail

Many callers won't leave one. If no one answers, they simply hang up and try the next business on the list.

Gone

A missed call is usually a missed opportunity, not a message waiting for you in the morning.

24/7

Enquiries arrive in the evenings, at weekends and on bank holidays, long after the front desk has gone home.

How your voice agent is built

Pre-built for call centres. Customised for your business.

Three steps. Live in 24 hours.

  1. 01

    Pick your template

    Our call centres template is pre-trained on industry-specific language, questions and workflows your customers expect.

  2. 02

    We clone & customise

    We inject your FAQs, your booking system, your team structure and your business voice into the template.

  3. 03

    Forward your calls

    Redirect your existing number to CallAgents AI. Your line is answered instantly. You get live leads in real time.

Platform features

Everything included. No hidden extras.

24/7 call answering

Every call answered instantly: evenings, weekends, bank holidays. Zero wait time.

Calendar integration

Syncs with Google Calendar, Outlook and industry booking systems in real time.

SMS & email summaries

Instant text and email after every call with caller name, details and next steps.

Lead scoring

Every lead scored by urgency, budget signals and readiness, so you call the hot ones first.

Human escalation

Urgent or complex calls are routed to you or your team instantly. You set the rules.

Outbound calls

Appointment reminders, follow-ups, review requests and re-engagement, all automated.

Built for contact centres

AI call overflow handling and after-hours answering for UK contact centres

Why even well-staffed call centres lose calls every single day

A contact centre can be fully resourced on paper and still bleed calls at the edges. Peak-time spikes arrive unpredictably: a billing cycle lands, a product recall goes public, a storm triggers hundreds of insurance enquiries simultaneously. Within minutes, queues stretch beyond the tolerance of most callers. Once wait time passes two minutes, abandonment rates climb sharply, and the majority of those callers never ring back.

After-hours periods, weekends and bank holidays account for a substantial share of inbound volume across most sectors. Staff sickness and attrition compound the problem: annual agent turnover in UK contact centres regularly exceeds 25%, meaning a centre that looks adequately staffed in January can be running short by March. Seasonal surges push even experienced operations into SLA breach territory faster than recruitment or training can respond.

How AI call overflow handling stops abandoned calls before they happen

CallAgents AI sits alongside your existing team as a permanently available overflow layer. When your queue depth exceeds a threshold you define, whether that is wait time, queue position or agent availability, calls are routed instantly to the AI. The caller experiences no dead air, no hold music and no recorded message asking them to try again later. The agent handles the enquiry directly, captures details for callback or transfers to a human agent when the situation demands it. See how it works for a full walkthrough of the routing logic.

Out-of-hours coverage operates on the same principle. Your team clocks off; the AI does not. Every call received after closing time is answered, resolved where possible and logged with a full transcript ready for your agents at the start of the next shift. No voicemail backlog. No customers who spent their evening redialling a number that rang out.

Unlimited simultaneous calls, without the hire cost

Adding ten agents means recruitment, induction, system access and training. That process takes weeks, and if the surge passes before they are productive, you are carrying headcount you no longer need. CallAgents AI removes that ceiling entirely. A hundred calls can arrive in the same minute and every one is answered on the first ring. Capacity scales up in seconds and normalises the moment volume drops, with no redundancy process required.

Deflecting routine enquiries so your agents focus where it matters

A significant proportion of inbound volume consists of enquiries that are transactional and resolvable without a skilled agent: account balances, order status, address updates, appointment confirmations. When the AI handles this tier, your human agents are freed for the calls where empathy and judgement make a real difference. The result is better outcomes for customers and more satisfying work for agents, which can in turn help reduce the attrition that creates staffing gaps in the first place.

The real cost of abandoned calls and SLA breaches

An abandoned call is rarely just a lost conversation. For regulated sectors, it can constitute a failure against contracted or Ofcom-mandated service levels. For retail and financial services, it is frequently a lost sale or a customer who churns without explanation. Research from ContactBabel puts the average UK contact centre abandonment rate at 18% during peak periods. Across a medium-sized operation handling thousands of calls per week, that is a measurable revenue leak and a reputational risk that compounds quietly over time. AI contact centre support addresses this systematically, by ensuring the overflow and after-hours call answering service UK businesses need is never left uncovered.

  • Peak-period overflow: absorbs sudden volume spikes instantly, preventing queue build-up before abandonment occurs.
  • After-hours call answering service UK: covers every hour your team is not available, including bank holidays and weekends.
  • Seasonal surge handling: scales to any volume within seconds, with no recruitment lead time and no fixed headcount cost.
  • Routine enquiry deflection: resolves transactional calls without agent involvement, lowering cost per contact across the operation.
  • SLA protection: keeps answer rates and wait-time metrics within contracted limits even when inbound volume spikes unexpectedly.
Pricing

Simple pricing. No surprises.

Three plans. Change tier any time as your call volume grows.

Starter

£149 / month

For sole traders & very small teams.

300 minutes included

1 voice agent

Inbound calls

Business hours (8am–6pm)

SMS call summaries

Email support

Scale

£499 / month

For multi-location & higher volume.

1,000 minutes included

Multiple voice agents

Inbound & outbound calls

24/7 with after-hours routing

CRM integration

Dedicated account manager

FAQs for call centres

Questions answered.

How does overflow routing work?

When your queue exceeds a threshold you set (time or position), calls are automatically routed to CallAgents AI. The AI handles the enquiry or captures details for callback. Your callers never know they left the queue.

Can it handle multiple clients' scripts?

Yes. If you operate as a bureau, we configure separate agent profiles for each client with their own scripts, FAQs and escalation rules. The AI identifies which client the call is for and responds accordingly.

Does it reduce our cost per call?

It can. AI-handled calls cost a fraction of live agent calls. Routine enquiries (address changes, balance checks, order status) are resolved without human intervention.

Does it integrate with our ACD and CRM?

We integrate with most ACD platforms (Avaya, Genesys, Five9, 8x8) and CRMs (Salesforce, HubSpot, Zoho). Call outcomes are logged automatically.

Is this full outsourcing, or can we use it just for overflow?

You choose the scope. Most contact centres start by using CallAgents AI purely for overflow and out-of-hours coverage, keeping their human agents on core hours and letting the AI absorb everything outside that window. There is no requirement to route all calls through the system. You define the thresholds and schedules, and the AI operates within those boundaries exactly as configured.

How does it connect to our existing telephony and CRM?

We integrate directly with the tools your centre already relies on. On the telephony side, we work with Avaya, Genesys, Five9, 8x8 and most SIP-compatible platforms via call forwarding or API routing. CRM connections cover Salesforce, HubSpot, Zoho and others with an open API. Every call outcome, transcript and captured detail is written back to your system of record automatically, with no manual data entry required.

How many simultaneous calls can it handle?

There is no hard limit. Whether you have one overflow call or several hundred arriving at the same moment during a surge, every call is answered on the first ring. Capacity is not fixed to a number of agents or lines. This is what makes the system genuinely useful during the peak spikes that cause the most SLA damage, because it does not queue calls, it handles them in parallel.

How does escalation to a human agent work?

You define the escalation rules during setup. Common triggers include: the caller requests a human agent, the query falls outside the AI's defined scope, the call involves a complaint above a certain severity, or a VIP account is identified. When any of those conditions are met, the call is transferred to the appropriate queue or individual in real time, with a brief handover summary so your agent knows the context immediately. Nothing is lost in the transfer.

More industries

AI call answering for related sectors

CallAgents AI is tuned for dozens of UK industries. See how it works for businesses like yours.

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Call us: 020 3912 9723 · info@callagents-ai.co.uk