moving to London

Hi all,

i've accepted a job offer in the UK, and will be moving in a couple of months.

I'm doubting whether I can keep an address still in Belgium (at a friend's) or whether I need to advise my commune of my departure? (I'm a Belgian citizen).

I'm also considering of keeping my EUR bank account.

Any advise of similar past experiences are highly appreciated.

Thanks,
Garf