I brought a air conditioner unit for home and the accountant claimed for that too!! I wouldn't of even thought to claim for that.
Just got myself a ps3,wonder if he can claim for that too somehow!! 
Just bear in mind that YOU & ONLY YOU are responsible for your accounts & tax affairs/liabilities!
If you get an HMRC enquiry or worse, a full investigation, it's nothing to do with "your accountant", THEY have their backs covered as you sign this off.
I have a friend who ended up having to sell his own house through what started as a mistake by his accountant!