Rather than using a spreadsheet, why not use the
www.vtsoftware.co.uk free cash book software which lets you quickly and easily enter your transactions, reconcile the bank, and produces the usual year end reports.
I'd also endorse free agent central as it also works out your tax bills as you go along which is invaluable if you really want to keep track of your forthcoming liabilities rather than waiting until the year end and getting a shock!
I really hate spreadsheets with a passion as virtually every client who has presented a spreadsheet to me has made a foul-up of it, with columns and rows that don't add up, links from one place to another that aren't automatically updated, putting £ signs in cells which makes the content a label rather than a figure, hence not being included in totals, etc. When a proper package like VT is free of charge and FAC is so cheap, I can't see why anyone would want to use a spreadsheet.