In reply to Flinticus:
You can buy inexpensive software that does it all for you including VAT and Payroll. You just enter outgoings and income. Some years ago I ran a company and used a product called "Sage Accounting". My accountant just had to sign the accounts off (literally), once a year, as I was a limited company. Not sure if Sage is still a good contender so a bit of research might be in order.
Al