I've just sold a property and would like to share the profit received with a relative. The money is in my bank. Can I write a personal cheque for a large amount of money (a good few thousand)? or do I have to go to the bank in person to get it arranged?
you should be able to write a cheque for all the money you have, but as a security measure - for your own security - the bank will want to be certain a big cheque is not some sort of con. Phone them and ask what their practice is.
I would set them up as a contact in internet banking, then you can transfer money directly from your account to theirs.
It would be a good idea to message the bank (which you can also do via internet banking) a few days in advance to tell them that you are soon to be transferring a very large amount of money to that payee.