Firstly write to your current accountant and tell the you are moving to Winchester Bourne.
Once we know you have done this, we will write a letter of courtesy to your current accountants asking them to forward all records, activation keys etc. that they hold on your behalf.
Provided that you have no outstanding bills with them they will forward all the information to us quickly.
We then complete a simple form on-line informing HMRC that Winchester Bourne is now you appointed agent.