Forwarding to Mobile? [UK]

Can anyone recommend a service that will let me purchase a 0844/0800 Number ( <--- Examples) then let me forward it to my mobile phone?

P.S - Those are UK numbers

I was using Net-Telco/./net to get 800 numbers to forward them either to UK land line or mobile/

I can't really recommend anyone because I don't use such services but since hardly anyone responded I thought I'd mention voipfone.co.uk. They've been around for a while now and seem to offer the kind of service you would be looking for. Here's a post that you may find interesting by one of their representatives on UKBuisnessForums: