Sorry Paul for the rather slow reply mate...
Ok, regarding receipt's - KEEP EVERYTHING, never throw anything away, get a box and put all your receipts from petrol to paperclips in it.
If your using your car, use a diary to write business mileage down.
Ensure you number and date invoices when you bill clients, and put these in order of trading month.
KEEP everything from bank statements to phone bill's.
You really do need an accountant, he or she will save you fortunes in the long run, they know all the in's and outs of self employed tax breaks, and info on NI and tax, plus they will help you fill out the tax forms.
Good-Luck mate.
PS : GOOD NAME !