Best place to put 50000 pounds

Not in a current account.
Depends on how long you wish to save the money for.
If you are going to need access to it on a regular basis then look at an instant access account from someone like Santander who will pay you around 3% interest.
If you can afford to save it, or a portion of it, for a longer period then look at a 1year or longer savings account which will earn you more interest.

I assume that as you're looking at current accounts that you will require instant access, you can check accounts out here www.money.co.uk/savings-accounts/instant-access-savings.htm. Some savings accounts come with a cashpoint card so that you can withdraw money as and when required. To be honest, interest rates aren't fantastic, but it will be more than you'll get in a current account.

I do wonder though if you will need instant access to all of it, or if you could divide it into some term savings or bonds, and a cash ISA if you haven't used your allowance this year.

If you can give us some more detail we'll try to give more help