Yes.

"7.14 Section 217(8) provides that obligations may be imposed on, and technical capability notices given to, CSPs located outside the UK and may require things to be done or not done outside the UK. Where a notice is to be given to a person outside the UK, the notice may (in addition to electronic or other means of service) be given to the CSP:

-- By delivering it to the person’s principal office within the UK or, if the person does not have an office in the UK, to any place in the UK where the person carries on business or conducts activities; or

-- At an address in the UK specified by the person."

https://www.gov.uk/government/uploads/system/uploads/attachm... -- page 59