Non-resident companies with a trading business in the UK are liable to pay UK Corporation Tax on their profits made through a permanent establishment/branch or agency.

If the non-resident company is deemed liable to pay Corporation Tax, then its chargeable profits are:

There are however some differences in the taxation of non-resident companies as opposed to resident companies. For example, a non-resident company:

Any UK-source income received by a non-resident company which does not carry on a trade in the UK through a permanent establishment/branch or agency is subject to UK Income Tax. Any Income Tax due is calculated at the basic rate only without any allowances, subject to any applicable Double Taxation Agreement.

Source:HM Revenue & Customs| 17-07-2022