Email Signature for Small Business Owners
Small business email signatures have two separate requirements: professional presentation and, for UK limited companies, legal disclosure obligations under the Companies Act 2006. Sole traders have no statutory email requirements but still benefit from a consistent, professional signature that builds credibility with clients and suppliers.
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UK Limited Companies: Mandatory Disclosures
Legal requirement — Companies Act 2006, Section 82
All emails sent by or on behalf of a UK limited company must include the following. Non-compliance carries a fine of up to £1,000 per offence.
Registered company name
The exact legal name as registered at Companies House — including 'Limited' or 'Ltd'. If you trade under a different name, include both: 'Trading as [Name] | [Legal Name] Ltd'.
Company registration number
The 8-digit number from Companies House. Format: 'Company No. 12345678'. This is not your UTR number.
Registered office address
The full address registered at Companies House — not necessarily your trading address. This is where legal notices can be served.
Country of registration
England and Wales, Scotland, or Northern Ireland — whichever applies. 'Registered in England and Wales' is the standard phrasing.
What to Include (All Small Businesses)
Your full name and job title
Owner, Director, Founder — use the title that reflects your seniority. 'Managing Director' for Ltd companies; 'Owner' or 'Founder' for sole traders.
Business name / trading name
The name clients know you by. If your legal name differs, use trading name prominently and legal name in the footer disclosure.
Direct phone number
The number clients will actually reach you on. Include country code for international clients. A landline adds credibility; a mobile is more convenient. List one, not both.
Business website
The most visited link in any email signature. Make it the full URL hyperlinked with display text: company.co.uk rather than https://www.company.co.uk.
Company logo
PNG with transparent background, 120–200px wide. Hosted at a public HTTPS URL. Reinforces brand on every email sent.
Email address
Your professional domain email (not Gmail). name@company.co.uk signals a legitimate business. Free email addresses undermine credibility for B2B correspondence.
Small Business Email Signature Examples
UK Limited Company
Alex Turner
Managing Director
Apex Digital Solutions Ltd
+44 7911 000000 · alex@apexdigital.co.uk
apexdigital.co.uk
Apex Digital Solutions Ltd · Company No. 12345678
Registered in England and Wales · 1 High Street, London EC1A 1AA
Sole Trader
Rachel Green
Interior Designer · Rachel Green Interiors
+44 7700 900000
rachelgreeninteriors.co.uk
rachel@rachelgreeninteriors.co.uk
Tips for Small Business Signatures
Use a professional email domain
name@yourbusiness.co.uk costs under £5/year through Google Workspace or Microsoft 365 and is one of the most credibility-building things a small business can do.
Put legal disclosures in a footer row
Use a separate table row below the main signature, at 10–11px, in a lighter grey (#888888). This keeps the Companies Act text visible but visually secondary to your contact details.
Keep it consistent across all staff
Every person who emails clients should use the same template with the same logo, font, and footer. Inconsistent signatures undermine the perception of an organised business.
Don't skip the logo
Even a simple text-based logo in the correct brand colour is better than no visual identifier. It takes 3 seconds for a recipient to recognise who emailed them — a logo makes that instant.
Related
Build Your Small Business Signature
Logo, contact details, and Companies Act footer — all in one template. Free, no signup.
Create My Signature →Works with Gmail, Outlook, Apple Mail & more