RE: For Those Who Work In Banking
I'd be inclined to leave it open with nothing in it. The aco**** will go dormant and they'll just close it after a while, maybe a year or so. Did you not set up a power of attourney for while you are away?
The only downside to not closing it is that by having something in the UK (bank account, house, plot of land to bury you), you are still considered to be domiciled in the UK. Should you pop your clogs, you'd still be liable for Inheritance tax. Though that's only a concern if you have more than 300k of assets. If not. Let it go dormant.