GovTech UK Companies House Digital Filing Service

Rate limits

• 600 requests per 5 minutes.
• Director personal data (name, birth month/year, nationality) is public under Companies Act 2006.

Supported filings

• 1Company formation (IN01 -- name, office, directors, shares, SIC),
• 2Confirmation statement (CS01 -- annual -- shareholder details, SIC update),
• 3Annual accounts (AA -- micro-entity, small, full -- iXBRL),
• 4Director appointment (AP01), director termination (TM01),
• 5Registered office change (AD01). i

XBRL

• Companies House accepts inline XBRL tagged accounts.
• Auto-reminder via GOV.UK Notify 2 weeks before confirmation statement due.

HMRC MTD Corporation Tax

MTD CT mandatory for accounting periods starting April 2026.

MTD CT API

obligation periods, CT600 digital submission, payment API, tax position. i

XBRL accounts

• same tagged accounts used for both Companies House and HMRC CT600 -- single generation workflow.
• ClickMasters builds iXBRL from structured P&amp
• L and balance sheet data.

UK GDPR for Director Personal Data

Director data at Companies House is public (Companies Act 2006).

However

• 1home address suppression (directors can suppress -- service address shown publicly),
• 2DOB suppression (month/year only public),
• 3legitimate interest for due diligence processing,
• 4PECR applies to marketing use without consent, (5)

SAR

individuals can request removal where data is inaccurate or they qualify for suppression.

ClickMasters accountancy SaaS

purpose limitation, retention policy, suppression support.