04/06/2026
We have helped dozens of UK founders set up their companies.
These 5 mistakes cost them thousands — and they all happen in the first 30 days:
1. Registering as a sole trader when Ltd saves you £3,000+/year
2. Skipping ECCTA identity verification (your registration gets rejected)
3. Opening a personal bank account instead of business (HMRC flags this)
4. Missing the voluntary VAT registration window (and losing startup cost reclaims)
5. Setting up Xero wrong on day 1 (costs £500+ in accountant fixes later)
Number 2 catches everyone off guard.
ECCTA is the new Companies House rule from 2025. Every director now needs identity verification before registration is accepted. No exceptions. No workarounds.
Most "how to start a company" guides haven't been updated for it yet.
We built the UK Company Setup Pack to fix this.
33 pages. Every step. Companies House → ECCTA → business bank → Xero → HMRC registrations → 90-day action plan.
£99. Instant PDF. 30-day money-back guarantee.
→ thriveonz360.com/uk-company-setup-pack
If you're setting up a UK company in 2026, this saves you the £300 accountant call and the 3 weeks of Googling.
Companies House fees doubled 1 February 2026 · Identity verification mandatory since November 2025