chrome bathroom pullswitch with chain ?

I am looking the a chrome pullswitch with a metal chain rather than a string. Obviously the chain needs to be isolated electrically. I bought a chrome switch with a string, and a separate chain (sold on the same shelf) from B&Q but the string cannot be replaced with the chain, unless you are happy with a bit of visible string at the top. I looked in the innards, and the string runs straight through the switching mechanism and very near live parts, so I decided not to try and frig it. Apart from annoyance at B&Q for the grouping of these products, anyone know where I can get a contemporary-looking switch ? All the google ones seem to be Victorian, Crystal, have porcelain bases etc, definitely not what I want. Cheers, Simon.