Taxable expenses when WFH
So I am disabled. My employer has an office near my home address but it is not accessible for me (my wheelchair can't fit in the lift, no disabled parking, no evac chair operatives to get me out in an emergency etc.). As a result of my disability OT has advised I work from home, however I can't reasonably be expected to work from the office anyway. My disability is dynamic but degenerative so I will have and unpredicatble scattering of good days and bad days but will get progressively worse until I die. HR have refused to give me a working from home contract, this was asked for as part of a contract renegotiation last year, so the official document I got says I have to be in the office 3 times a week.
As I work from home, my employer has covered most of my major expenses since this stopped being my choice (desk, chair, headset etc). However, I have a bunch of work-only expenses (stationary, paper and printer, textbooks) I purchase out of pocket because I can't access the company's physical library and I don't go into an office often enough to collect from there. We also had to upgrade our broadband to meet my working requirements as I needed better connectivity.
From what I am reading about the rules of tax deductible expenses these would not meet the requirements of the law as tax deductible, (I don't have a wfh contract and there is an office nearby) unless there is a special clause for disabled. Can anybody advise if there is a way for me to claim these as a deductible expense? I figure it is easier to do this than sit on hold with HMRC for a few hours.
I recieve PIP but that doesn't cover my in-home help, let alone my wheelchair and other mobility aids, I don't qualify for much free help at my worse because I am independent still at my best, so on the "average" I narrowly miss out, just hoping this may help ease the burden.