I agree with pedro1 and zulu2002, the only reason to ask that question is that you are contemplating reneging on your CURRENT debts. If you have the means, pay them off and stop trying to steal money from others (you obtained the loans, you agreed to pay them back, you are liable for the amount owed including all interest you agreed to - did you do that under false pretence?). If you don't have the means, enter into negotiation to agree an affordable repayment plan.
Lots of ways of finding people's address ash26. Most people use their address to receive things (post, bills, guests, etc) so most people happily and habitually tell others their name and address repeatedly during any given year. Don't assume your ICB record is squeaky clean either, if you used a variation of your then address when applying for your loan then it wouldn't necessarily appear if you asked ICB for a different variation.