Decide what's important to you from a current account.
If you have a personal banker (someone you can talk to) then that can save you a lot of time.
You might need a large overdraft facility - due to inconsistant income payments, be wary of using it as a long term loan (but better than a creadit card).
You might want interest on the credit balance - but this is likely to be low.
Most institutions have an internet only deposit account with a competitive interest rate which you can trnsfer money to and from on-line without notice.
It's a usually good idea to open one of these but don't run your current account too low - it's always possible you won't be able to access it for a period.
Even if you don't have money to transfer to the e-account now you may in the future.
Remember - as a general rule an unplanned negative balance is not a good thing.
Refused standing orders / direct debits are usually a very bad thing. Large fees, negative credit rating.
If you are going to go overdrawn call the institution and explain.
If it's temporary they will probably give you a temporary overdraft facility which will at least allow the account to function.