claiming flat rate of home as office (£6/week) living abroad

My client is currently employed and working abroad in the UAE and also has a small self employment business as an author, which started in the UK before they started working abroad. My question is, can my client still claim the flat rate of home as office, being £6 per week while they are still working abroad, or is this not an allowable expense? Kind regards

Hi Sam,
Only if they are still doing any of the duties in relation to the self employment whilst in the UAE.
Thank you.