Are You VAT Registered?
We highly recommend Xero.
We happily work along with QuickBooks, Sage, FreeAgent and users of other software but if you're starting out and able to chose we highly recommend the market leading Xero.
Are You a Small Non-VAT Registered Business?
Then try Pandle
Pandle offer a free version – suitable for very small businesses without a business bank account or a very completive paid version – well worth the money if you’ve a business account you can link.