Does anyone trade the LSE's IRS shares? If so, any advice? Are they easy to sell and how exactly do they work? I.e. If I buy some are the LSE simply buying the shares on the foreign index for me and providing me with a quote in Sterling? Any advice would be greatly appreciated. Given the current favourable rate of the pound against the dollar am i correct in assuming that now would be a good time to buy shares trading on the DOW, NASDAQ using this service?

Cheers for the advive. Much appreciated.