P87 internet and electricity supply to shed discounted

Gavpow

Hi everyone. I've had to put internet and electricity cabling into my shed to use as a home office. I included it in my P87 for last year but it's been discounted. Is this correct as I'm sure I read this was an allowable expense?

Jeremy535897

It is very unlikely to be allowable. This guide explains why:
https://taxaid.org.uk/guides/information/issues-for-employees/employee-expenses