A couple of extra thoughts.

Instead of full VAT you can register for flat rate vat (FRV) where you are able to charge VAT, and instead of claiming back on your spending, you simply get a % of your VAT back. This reduces paperwork and is great for freelancers who may have very little outlay. You do find yourself trying to get the client to buy things, rather than buying and invoicing them though, so it won’t suit all.

A company Year End is dependent on when your company started – and then the deadline for filing is 9 months later. Accountants will often get the year ends changed to align with a either a calendar or an April financial year, but potentially the deadline for filing corporate accounts could be any month.