SMS Compliance in the United Kingdom

Key Rules for SMS in the United Kingdom

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.

Across the EU and the UK, the ePrivacy rules (implemented through national laws, and PECR in the UK) generally require prior consent before sending marketing texts to individuals, with a limited 'soft opt-in' for existing customers buying similar products. GDPR or UK GDPR then governs how the contact data itself is handled.

Practical Checklist

• Collect and record consent (or confirm an existing customer relationship) before sending, with the date and source.
• Use a registered sender ID or number that recipients can recognise as your business.
• Identify your business in every message and keep promotional and service messages separate.
• Give a simple way to opt out of marketing and process opt-outs quickly across all your systems.
• Send in the recipient's local daytime hours and keep frequency reasonable.

Contact data

Format numbers in international E.164 format with the +44 country code, remove duplicates and invalid numbers, and keep consent records linked to each number.

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.

Advertising Alongside Messaging

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

This guide is general information, not legal advice, and reflects our understanding as of October 2026. Rules change, so we check current requirements for the United Kingdom before every launch.