Also bear in mind that your brother is exposed in full to CGT from the date of transfer as he would not be entitled to PPR relief.
This contradicts an earlier response on this thread, where I was informed that:
Is there any capital gains tax on me or my brother when dad transfers ownership of each property to a joint tennant arrangement?
No. Any CGT charge will be on father.
Please can you clarify. I was under the impression that a gift from dad to son would not incur CGT for son, but only for dad.