Do you intend using the cash straight away - if it is proceeds of an apartment I presume it is a substantial sum. Once you have deceided what bank you are going with (based on best buys forum) you should call through in advance and get them to quote you a rate - phoning around the banks then to get the best on offer.
However do you intend using this cash straight away? If not UK interest rates are far higher than here, so you should, if you intend leaving it on deposit, transfer to the highest yielding account at your current bank in the UK.
Paddy