UK SIC 2007 · 99999
Dormant Company
Dormant Company is UK SIC code 99999, part of division 99 (Activities of extraterritorial organisations and bodies) in the SIC 2007 classification. As of the July 2026 Companies House register, 106,166 active UK companies list 99999 among their SIC codes, and 100,647 list it as their first code.
As of the July 2026 Companies House register, 106,166 active UK companies list 99999 among their SIC codes (100,647 as their first code).
Companies House data refreshed daily. Page reviewed July 2026.
Division 99: Activities of extraterritorial organisations and bodies
The official title of this division refers to extraterritorial bodies such as international organisations, but on the UK register it functions almost entirely as the home of 99999, the code recorded for a dormant company. A company reporting 99999 is declaring that it is not trading: common examples include name-protection vehicles, companies held ready for future ventures, and former businesses wound down but not yet dissolved. The code says nothing about the industry a company might one day operate in, only that nothing is currently happening.
Dormant companies are usually stripped from prospect lists, and rightly so for most campaigns, but the code has selective value. Accountants and filing services sell dormant company accounts and confirmation statement support, since even non-trading companies face Companies House deadlines every year. Formation agents and registered office providers renew annually against this population. Most interesting is the change signal: a company switching away from 99999 on its confirmation statement is announcing that trading has begun, one of the cleanest new-business triggers available in the data.
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Where SIC 99999 clusters in the UK
About SIC 99999
How many UK companies use SIC code 99999?
106,166 active UK companies include 99999 (Dormant Company) among their up-to-four registered SIC codes, of which 100,647 list it first. Figures are from the July 2026 Companies House register snapshot, counting active companies only.
What does SIC code 99999 mean at Companies House?
99999 indicates a dormant company, one that is not trading and has no significant accounting transactions. It is a self-declared status shown through the SIC field rather than a formal licence or ruling, and Companies House does not verify it. Dormant companies still owe annual filings: a confirmation statement and dormant accounts. The code is distinct from 74990, which marks a non-trading but differently characterised entity.
How do I change my company's code from 99999 when it starts trading?
File a confirmation statement (CS01) and replace 99999 with up to 4 SIC codes describing the new activity; there is no approval process and the change takes effect on the public register once the statement is accepted. Remember the accounting side too: once trading begins the company can no longer file dormant accounts, so speak to an accountant about the first full set of accounts.
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