Build in public

Notes from building an AI receptionist.

Arun Paul is building Magixis and writes up the research as he goes: what the UK rules require, what vendors actually charge, and which of the numbers this industry quotes survive being traced back to a source. Every post ends with its source list, fetched and checked on the day it went out.

Posts · 07 Latest · 25 Sep 2026
25 Sep 2026Compliance14 min read

What a GP practice must check before an AI answers the phone: MHRA, DCB0160 and the 2026/27 contract

No rule stops a GP practice putting an AI on its phone line. What the AI is for decides how much follows: booking and routing is administrative, sorting callers by urgency is likely a medical device. Also inside: why DCB0160 is the practice's duty and not the vendor's, what DTAC does and does not tell a buyer, and the 2026/27 contract line that bans telling a patient to ring back tomorrow.

Every rule quoted is linked to source Checked 25 September 2026
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"Software that is used to book an appointment, request a prescription or have a virtual consultation is also unlikely to be considered a medical device if it only has an administrative function."
25 Sep 2026Compliance16 min read

What your phone agrees to: UK consumer law when an AI receptionist books a plumbing or electrical job

A job agreed on the phone is a distance contract, so the customer usually gets 14 days to cancel and the work must be confirmed in writing before it starts. Emergency call-outs lose that right, but only for the urgent repair. Also inside: why starting inside the 14 days needs an express request, how "someone will be there within the hour" becomes a contract term, and the VAT-inclusive call-out price the CMA can now fine you over.

Every rule quoted is linked to source Checked 25 September 2026
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The trader "must not begin the supply of a service before the end of the cancellation period" unless the consumer "has made an express request".
4 Sep 2026Compliance18 min read

What a law firm must check before an AI answers the phone: SRA, LeO and MLR 2017

Giving legal advice is not one of the six reserved activities, so the permission question passes easily. The one that decides it is confidentiality, which attaches from the caller's first sentence because the SRA Glossary counts prospective clients as clients. Also inside: the SRA's 17 August 2026 warning notice on AI misuse, where MLR 2017 reg 4(1) due diligence starts, and the Legal Ombudsman's one-year clock.

Every rule quoted is linked to source Checked 4 September 2026
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"Using AI tools in this way will likely breach client confidentiality and as a result, legal professional privilege may be permanently waived and unable to be recovered."
4 Sep 2026Operations16 min read

What an HVAC firm's out-of-hours phone actually has to do

One call is never triaged at all: a suspected gas escape or a sounding CO alarm goes to 0800 111 999, and whoever answers reads the safety steps and stops. Everything after it is already drafted — Awaab's Law has fixed a 24-hour investigate-and-make-safe duty in social housing in England since 27 October 2025, and housing associations publish their three-tier matrices with the hours attached. Also inside: what waking the engineer costs under Tomlinson-Blake.

Every timescale quoted is linked to source Checked 4 September 2026
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15 Aug 2026Compliance15 min read

How medical clinics and law firms use AI to automate lead routing

Route on what a caller stated and you are automating admin. Rank by inferred severity and MHRA guidance treats the software as a medical device, because in England triage has a statutory definition. Also inside: the conflict-check order a law firm cannot reverse, and why the five-minute response rule is 2007 vendor data from six companies.

Every rule quoted is linked to source Checked 15 August 2026
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13 Aug 2026ROI & business case22 min read

The hidden cost of missed calls: how an AI receptionist pays for itself

The "$126,000 a year" figure everyone quotes is untraceable — one attribution points at a 404. The "62%" figure is from January 2016. We traced both, then priced 19 AI and human answering vendors off their own live pages, and show the twenty-minute method for working out your real number.

Every price read off the vendor's live page Retrieved 13 August 2026
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13 Aug 2026Compliance20 min read

AI receptionist for accountants: what the UK rules require

Whether UK practices need one at all, then the rules if you run one: ICAEW guidance, the PCRT's January 2026 AI update, the ICO's position on call recording and DPIAs, and the Article 22A–D rewrite in force since 5 February 2026. Quoted from the instruments rather than paraphrased.

Every rule quoted is linked to source Checked 13 August 2026
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"In the vast majority of cases, the use of AI will involve a type of processing likely to result in a high risk to individuals' rights and freedoms, and will therefore trigger the legal requirement for you to undertake a DPIA."
Method
01

Dated sources on every post

Each post ends with its full source list, fetched and checked on the day it goes out. Prices carry the date they were retrieved.

02

Untraceable numbers get flagged

Figures that can't be traced to a real study, like the "$126,000 a year" missed-call statistic, are labelled as claims and never used as evidence.

03

One author, no agency

Arun Paul researches and writes every post himself, in the course of building the product.

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Arun Paul · Founder
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