Transformer

I know this is similar to the other thread ...........but

Does anyone know where I could get a 240 to 110v Transformer ??

Seen one in Maplin but think that its for US (60hz) where it should be 50hz !!!!

Need to use the electric hook up at the campsite

cheers

Would this work http://www.tlc-direct.co.uk/Products/SDTR750slash1.html

If I changed the connector on the japenese lead for the 110 3 pin plug, that'd connect into the transformer then change the 3 pin UK plug for a caravan electics adaptor, I think it'd work :dunno: