probably not the kind of advice you were hoping for but you'll need to make sure you register with HMRC and National Insurance as self-employed within 3 months of starting up or you could face a fine.......
http://search2.hmrc.gov.uk/kbroker/hmrc ... tegory2010
if you start trading in this financial year 2010/2011 you won't need to complete a tax return until after the year ends on 05/04/2011. You then have up until 31.01.2012 to p*y any tax liability owed. You can submit tax returns either by paper (must be by 31.10.2011) or online (must be by 31.01.2012 but you'll need to be registered with the government gateway to file online so make sure you leave plenty of time for that as registration can take a few weeks) The earlier you submit your tax return after 05.04.2011 the easier it will be for you as HMRC will calculate your tax liability and send you a statement of what you must p*y if you send your information in before 30.10.2011. If you send your tax return in after that date then you will need to calculate your own tax liability. more info can be found here...
http://www.hmrc.gov.uk/sa/payments-refunds.htm
You can always ask your local office for advice, I'm not sure if the Durham enquiry centre is still open, but you need to phone to make an appointment first anyway so here's the number you'll need to ring and you can ask there if you need to go to Sunderland or Durham. Good luck x
http://search2.hmrc.gov.uk/kbroker/hmrc ... e=hmrctaxo