I opened a Direct ISA with A&L. You only have to open with a minimum of £1. Once your direct ISA is opened, then you will get a transfer form to complete for transferring previous subscriptions. Like the other poster said, you will still be able to pay in up to £3600 for this tax year as well as transferring previous subscriptions. Please be aware that there are delays in transferring previous subscriptions but I am led to believe that interest is backdated.
cheers