Missed Call Text Back in the UK: How It Works and What It Costs

You're on a job, the phone rings and you can't answer. By the time you call back, they've booked someone else. Missed call text back is the simple fix: the moment a call goes unanswered, the caller gets a message from you, so they know you've seen it and they don't move on to the next number.

This guide covers how it works on a normal UK mobile, what the main UK services charge and what to look for before you sign up.

How missed call text back works

There are only three parts:

1. A call goes unanswered. You're busy, driving or out of signal.
2. The call is forwarded. Your phone uses conditional call forwarding (a divert that only kicks in when you don't answer, you're busy or you're unreachable) to send that call to the text back service's number.
3. The service messages the caller. Usually within seconds, it sends a text or WhatsApp saying who you are and asking what they need. Their reply comes to you.

You keep your own number. Customers keep ringing the number on your van. Nothing changes for them except that they hear back.

Setting up the divert

On most UK networks you set conditional diverts with a short code, or in your phone's settings. Vodafone explains its divert options here: Vodafone: manage call diverts. EE Business has a similar guide: EE: manage call diverts.

Two things are worth knowing:

• Check your tariff. Diverted calls can be charged on some plans. Your network can tell you.
• Test it. Ring your own number from another phone, let it ring out and check the message arrives. A good provider does this test with you during setup.

What it costs: UK prices compared

These are the published prices on each provider's own site, as shown on 28 October 2026. Check the provider's site before you buy, because prices change. Some say whether VAT is included and some don't, so ask.

We're one of the options in that table, so read it knowing that. There's a longer side-by-side on our compare page, including AI receptionist services.

Why the prices are so different

The cheapest and the dearest options are mostly separated by what happens after the first message:

• Basic text back sends one message and leaves the rest to you. It's fine if you just want the caller to know you'll ring back.
• Conversational text back asks what the job is, where it is and how urgent it is, so you get a proper enquiry rather than a name and a number.
• Full speed to lead covers more than missed calls. Website forms, ad leads and Google messages get the same fast reply, and someone follows up with people who go quiet.
• Self-serve vs done for you. Cheaper plans usually mean you set up the divert and write the messages yourself. Dearer ones do it for you.

None of these is wrong. It depends on how many enquiries you get and how much a missed one costs you. Our missed call cost calculator gives a rough figure from your own numbers.

SMS or WhatsApp?

Most UK text back services use SMS. Some, ours included, use WhatsApp.

SMS reaches every phone, including older ones. WhatsApp feels more personal, it's easy to reply to, and lots of people already use it to talk to local businesses. We chose WhatsApp only for Speed to Lead so that everything is in one place, but it's a reasonable choice either way.

Do you need consent to text missed callers?

A reply to someone who has just rung you about a job is a service message, not marketing. Where it gets stricter is if you later send that person offers or promotions. In the UK that's covered by PECR, and the ICO sets out when you can send marketing texts, including the "soft opt-in" for existing customers: ICO: electronic mail marketing. Keep your missed-call message about the call, and always let people opt out.

Missed call text back or an AI receptionist?

An AI receptionist answers the call and talks to the caller. Text back lets it ring out and messages them instead. Some callers would rather talk. Others would rather type, especially when they're at work themselves.

If most of your work comes in by phone and callers often want to talk it through, an answering service may suit you. If you're happy for most enquiries to start as a message, text back is simpler and cheaper. We offer an AI Voice Receptionist as an add-on for trades who want both, but most people start with Speed to Lead.

What to check before you sign up

• Does it work with your existing number and network?
• Does it only trigger on calls you genuinely miss?
• What exactly does the first message say, and can you change it?
• Does it follow up, or is it one message only?
• Does it cover website and ad enquiries too, or just calls?
• Is there a contract, and how do you cancel?
• Who sets it up, and do they test it with you?

The short version

Missed call text back is a cheap, simple way to stop losing work to voicemail. UK prices run from under £20 to around £100 a month, depending on how much it does. If you want every enquiry answered in under 60 seconds on WhatsApp and set up for you, have a look at Speed to Lead. If you just want a basic text, one of the cheaper apps may be all you need. No worries either way.