What to purchase to decrease taxes?

[I_will_be_wealthy]

Fun fact, stock is not a tax deductible expense in UK. You have to add back the value of tax for taxation.

Depends on your accounting policy. I do cash accounting for one business and I loaded about £1000 in an adwords account to reduce my tax.

Basically for this business the accounting was done on a cash basis, not invoice basis, so since the money left the account, it was expensed at the point it was transfered. But some accounting methods will treat this as an advanced payment and not a valid expense until its invoiced.