Compliance guides

Messaging Compliance in the United Kingdom

SMS, WhatsApp, voice and RCS rules for businesses messaging customers in the United Kingdom.

Overview

Marketing SMS in the UK is governed by the Privacy and Electronic Communications Regulations (PECR) and UK GDPR. You generally need prior consent (or the 'soft opt-in' for existing customers), must identify yourself and must offer a simple way to opt out. The ICO enforces these rules.

UK websites need a lawful basis under UK GDPR for processing personal data, a clear privacy notice and, under PECR, consent before setting non-essential cookies such as analytics and advertising tags.

Google dominates UK search, and local intent searches ('near me', borough or postcode-level) are important for service businesses; British English spelling matters for content.

In Europe, WhatsApp marketing is treated like other electronic marketing: you need a lawful basis, usually consent, and you must be transparent about how contact data is used under GDPR or UK GDPR.

European countries regulate marketing calls through national laws and do-not-call or objection registers, and automated (recorded) marketing calls generally require prior consent.

Advertising Rules

Ads in the UK must follow the CAP Code enforced by the Advertising Standards Authority (ASA), including clear labelling of influencer and affiliate content.

Digital Habits and Channels in the United Kingdom

Almost every adult in the UK owns a smartphone, and WhatsApp is the most used messaging app, but SMS remains the trusted channel for appointment reminders, delivery updates and one-time passcodes from banks, the NHS and couriers. Alphanumeric sender IDs (a brand name instead of a number) are widely supported, and the UK's Mobile Ecosystem Forum runs a SMS SenderID Protection Registry that helps block impersonation of registered brand names.

Card and contactless payments dominate, with Apple Pay, Google Pay and PayPal common online, and Buy Now Pay Later is popular in fashion retail. The retail calendar is built around Black Friday, Boxing Day sales, Mother's Day in March and the summer holidays, and many businesses quote prices including 20% VAT.

The UK economy is led by services: financial services in London and Edinburgh, professional services, creative industries, higher education and healthcare, with manufacturing in aerospace, cars and pharmaceuticals. VAT is 20%, and most consumer prices include it. Under PECR, marketing SMS and email to individuals need prior consent, unless the 'soft opt-in' for existing customers applies, and the ICO can fine companies for breaches. The Telephone Preference Service (TPS) lets people block sales calls. Contactless card payments and Apple Pay are used for most everyday spending.

Compliance in the United Kingdom: FAQs

Which messaging channels need registration in the United Kingdom?

It depends on the channel. Sender IDs for SMS often need registration with operators or the regulator, WhatsApp requires a verified business account and approved templates, and RCS needs brand verification. Each channel guide explains the details.

Does data protection law apply to messaging in the United Kingdom?

UK websites need a lawful basis under UK GDPR for processing personal data, a clear privacy notice and, under PECR, consent before setting non-essential cookies such as analytics and advertising tags.

Is this legal advice?

No. These guides are general information. For significant campaigns, take advice from a local lawyer.

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