how do I point a .co.uk domain to a USA host?

[luh t]

I have new hosting in the USA for my website but my domain is a .co.uk

My host in the USA said they can't renew or "hold" .co.uk domain so they told me to register it in the UK and point the nameservers to the USA host. I can't really find much information about who offers this service will it normally be offerered by any one whos sells UK domains ?