As someone has already said. You can only transfer your ISA and NOT open another one.
A transfer does not affect your ISA allocation for the tax year. Bear in mind that you must transfer the full ISA and not part of it. So in this case you would need to go to your provider your taking it to and fill out a transfer authority form to move it.
A&L are the highest paying ISA account that accepts transfers into the Direct ISA. Northern Rock also have an Access ISA which is the highest fixed ISA at 6% and you can get unlimited access to the funds via a postal request. As mentioned though Abbey and A&L can be done online if thats what your interested in.
Hope this information helps.