While it's generally a straightforward process, there are a few things you might want to keep in mind.

Firstly, it can take time to complete, so keep an eye on the transfer process, just to make sure everything's going smoothly.

Secondly, some providers might charge you an exit fee to transfer out - a bit archaic but some providers still do it.

Lastly, due to the ups and downs of the market, the amount that lands in your new ISA might be a bit less than you expected. This is because the price at which your investments are sold could be lower than when you requested the withdrawal.