wanted - Real Time feed for London Stock Exchangee

I've tried the evaluation version of the Stock Exchange's EIW product. Charting is, er, broken. I'm sure they are working on it and that it will be wonderful, but I'm an impatient sod.

SO, what I'm looking for is a realtime feed of raw data via HTTP, XML, RSS, etc, from which to construct my own charts. Real Time is a must.

Anyone?