Wanted B2 barrel

I am looking for a replacement barrel for my B2 air rifle. Second hand would be fine, any condition as far as finish goes. I can always re-blue it. .177 would be best, but I would not carp at .22 as long as I could get a barrel.Length is not important. Hope there might be someone here in the Uk so I didn't have to pay for international shipping. Anyone out there can help me? Regards and thanks. Walt.