AI answering service for UK plumbers: what changes vs the US

Recording: tell every caller in the UK, and assume you must in the US

In the UK, a business can record its calls to keep a record of what was said, on one condition. The 2018 Investigatory Powers regulations require that the business "has made all reasonable efforts to inform every person who may use the telecommunication system" that calls may be intercepted. In plain words: say it.

The transcript is personal data as well. Article 13 of the UK GDPR says that when you collect it, you tell the person who you are, why you're collecting it, who receives it, and whether it's going to a country outside the UK. That last item matters more than it looks, because most of this software is American. Ask the vendor where the recordings are stored and for how long. If it's outside the UK, your privacy notice says so. If they can't answer in one sentence, that's your answer.

In the US, federal law is one-party consent. 18 U.S.C. 2511(2)(d) allows a recording where one party to the call consents, and your business is a party. The states don't all agree. California's Penal Code 632 makes it an offence to record a confidential call without the consent of every party, and other states have their own versions. The Digital Media Law Project advises that when a call crosses state lines, you play it safe and get everyone's consent.

So both countries end up in the same place: one sentence at the start of the call. The one I write says, "This call is recorded so Dave gets your details right." It costs three seconds. I'm a plumber, not a lawyer, so check the wording and your privacy notice with your own advisor before anything goes live.

Texts and callbacks: PECR in the UK, the TCPA and 10DLC in the US

Two texts come out of a caught call. One goes to you: the job summary. The other goes to the caller: "Thanks, Dave will ring you back shortly." That second one is a reply to someone who just rang you about a job. It isn't marketing.

The trouble starts later, when somebody wants to text last winter's callers about boiler services. In the UK that's marketing, and PECR counts a text as electronic mail. Regulation 22 wants prior consent, or the soft opt-in: you took their details during a sale or negotiations for one, you're offering similar services, and you gave them a simple way to say no when you took the details and in every message since. A caller who rang about a leak last February and heard nothing since is not a marketing list.

In the US there's a carrier layer on top of the law. Twilio's 10DLC documentation says anyone sending texts from an application to US numbers over an ordinary ten-digit number must register a brand and a campaign. Unregistered traffic pays extra carrier fees and gets filtered harder. Skip it and your "ring you back" text may never arrive.

And one US ruling matters to anyone tempted to let the AI ring customers back itself. In February 2024 the FCC ruled that AI-generated voices count as "artificial" under the TCPA, so a business needs the called party's prior express consent before making a call with one, unless it's an emergency or exempt. That's about calls it makes, not calls it answers. The system I build only answers. The callback is you, in your own voice, in both countries. That's also why it closes.

Words, credentials and the one emergency line you can't get wrong

A script written in America sounds American, and a UK caller hears it inside ten seconds. These are the words I change first:

• Stopcock, or stop tap. In the US it's the main shut-off valve. Question two of the script, "has it been stopped?", only works if it can ask a Manchester caller whether they've found the stopcock.
• Combi, system boiler, cylinder. A lot of a UK plumber's week is heating. An American plumber's is water heaters, and the furnace often belongs to the HVAC company. "Is the boiler showing a fault code?" is a UK question.
• Cistern and toilet tank. Same porcelain, different word.
• Postcode and ZIP code. A UK postcode read back letter by letter is the best address check there is. It should read it back on every call.
• Call-out charge and service call fee. Same idea. Use your word, and say whether there is one before the caller meets it on the invoice.

Credentials go on the card too. In the UK, you must be on the Gas Safe Register to carry out gas work legally, so a caller with a boiler fault often asks "are you Gas Safe?" first. If you are, your number is on the card and it reads it out. If you're not, it says so politely and keeps the water jobs. In the US, your plumbing licence number does the same work.

Then the line that must never be translated wrong. A caller who smells gas in Britain should ring the National Gas Emergency Service on 0800 111 999, from outside the home, without touching switches. In New York, Con Edison tells people to leave and then call 911 or the utility. An American script that says 911 to a caller in Leeds isn't a small bug. The script I write puts safety before the questions: a gas smell, water near the consumer unit (the panel, in the US), a ceiling that's bowing. Those callers get the emergency number and the reason first, and the five questions after.

If you're a UK electrician reading this, swap the stopcock for the consumer unit and it all still applies. The UK electricians post has your version of the card.

The money: a human answering service is cheap in the UK and dear in the US

Say you'd send 60 calls a month to an answering service: the ones you miss on the tools. Here's what a human service costs for them in each country, from the prices the services publish.

In the UK, Answer.co.uk's May 2026 guide puts answering services at £0.60 to £2.50 per answered call. That's 60 × £0.60 = £36 at the bottom and 60 × £2.50 = £150 at the top. The same guide puts a two-person plumbing firm's typical spend at £40 to £160 a month.

In the US, Smith.ai's receptionist plans start at $300 a month for 30 calls, with extra calls at $11.50 each. Sixty calls is $300 + (30 × $11.50) = $645 a month. That's one vendor, but it bills per call like the UK services, so the sums compare.

Now the part the American blogs won't tell a UK plumber. In the US, most of the pitch for AI is price: the cheapest off-the-shelf AI plans start well under that $645, and I walked through their prices in the cost post. In the UK, a human message-taking service at £40 to £160 a month is hard to beat on price. So the UK case for AI has to be something else. It answers three calls at once when a cold snap bursts half the street's pipes. It asks your questions, in your order, every time. It reads the postcode back. If a message service at £40 a month already does that for you, keep it.

A done-for-you build like mine starts at $4,500, billed in dollars, plus a monthly for the line, the minutes and my monitoring, quoted in writing before I touch your phone. In year one that's dearer than any UK message service above, and I'd rather write that than have you find out. What decides it is what your missed calls are worth, not what the service costs. The missed call post has that sum in pounds, and the calculator runs it on your numbers.

When a UK plumber shouldn't buy one, and what to do this week

If your phone rings twice a day and you answer both, keep your money. If you're booked for three months and happy to turn work away, keep it too. And if a UK message service catches your calls and you ring back fast, the upgrade is small. I'll tell you that on a call.

One more honest line. My first live client is a plumbing company going live in October 2026. I don't have a UK plumber live yet, so every figure here is a published price or a worked example, not a result.

This week, in order:

1. Ring your own mobile from another phone at eight at night. Whatever you hear is what your customers hear.
2. Set divert on no answer. On BT's codes, 61 diverts calls not answered after fifteen seconds and ##002# clears every divert. In the US, Verizon uses *71 plus the number, and *73 turns it off.
3. Write the recording sentence, and add two lines to your website's privacy notice: that calls are recorded and why, and where the recordings are kept.
4. Write the card: the postcode districts you cover, gas or no gas and your Gas Safe number, your call-out charge, and the stopcock line.
5. Before you buy anything, ask the vendor three questions. Where are recordings stored? What does it say to a caller who smells gas? Will it read a postcode back? If the answer to the second one is 911, walk away.

If you want a second pair of eyes on the card or on a vendor's answers, book a growth call. Thirty minutes, free, and if the answer is a divert code and the message service you already pay for, that's what I'll say. What I'd build for a plumbing business is on the plumbers page.