Some current accounts pay 3% interest if you keep the balance up to £3000, above that they pay no interest. If you could open three or four of these with your £10,000 and keep them going you would get more than if you took out an ISA. 3% of £10,000 is £300, an amount worth having. Have a look on the Money Saver website.
They do have a minimum pay-in per month of £500 or £1000 - but it can be the same money going from one account to another, round and round. Half an hour spent opening online accounts and working out a system of Direct Debits and setting them up will get it all working.
The Banbk of Scotland at the moment pays 3% interest on amounts between £3,000 and £5,000 and you can have up to three accounts - but they have just announced that as from 11th June it will only be 2%, on amounts between £1 and £5000. Even that is better than an ISA!