You can claim 100% as AIA (annual investment allowance) in this current tax year (so you'll not benefit 'till next year)
Or, you can still write it down over several years.
Depends on your circumstances really. If you claim any tax credits then I would use AIA 100% then you will get a lump sum back, as (unless you've made the purchase price more in profit) you'll have been underpaid for this year. Plus, next year your tax credit award will increase (providing the goal posts stay the same).
If you don't claim any tax credits & you would prefer your tax liability to stay similar year on year then it might be better to write the cost down over more than one year.
Hope that helps.
If you have an accountant, they'll tell you what's best for your circumstances.
If you're not vat registered then you obviously can't claim the vat back BUT the vat you paid is tax deductible, i.e. the FULL purchase price will be off set against your tax liability.
