Cash basis accounting - where to list laptop as business expense

Last year I bought a new laptop for work. I'm filling out my self assessment for tax (I'm a sole trader using cash basis accounting). From what I can see, the expenses section doesn't seem to have a box for listing laptops etc; but because I'm using cash basis accounting the guidance says I can't include it in the trading allowance section. Which section should I include it in? Any help would be appreciated!

Hi,

In the self employment section 'Capital allowance and balancing charges', have a look at the box 'other capital allowances' and consider the writing down allowance '18% Writing Down Allowance (WDA) on the balance of expenditure on equipment in the main pool, the unrelieved amount is carried forward to your next period'.  

You may also wish to consider the annual investment allowance, which goes in the same box. You can see guidance on capital allowances here:

Claim capital allowances

Thank you.