I'm no expert myself, but have a look at the range of TV/Video senders from Argos and check the reviews
http://www.argos.co.uk/static/Browse...s|12108837.htm
Hopefully somebody else more knowledgable will be along soon
---------- Post added at 01:20 ---------- Previous post was at 00:48 ----------
Sky seem to recommend the following one on their Help Centre website
http://mysky.sky.com/portal/site/sky...cleId=11327703
Its around £15 from Argos -
http://www.argos.co.uk/static/Produc...%3ETV+LINK.htm
But i get the impression you actually need to connect our 2nd TV to the Sky box