Thanks!

"DaFlake", I forgot about the sticker on the post on the inside of the drivers door

.
On the flat tyre issue, once you have a flat again as "DaFlake" says you can still drive slowly!, but the problem with the run-flats is once you have driven on them flat, this can / could damage the tyre and the Main Dealers & tyre shops / fitters will advise you to replace the tyre which can be expensive (not so bad if your tyre is near the end of it's life but mine is normally the best tyre that goes

), so you're best of getting to a safe place or to a tyre shop / fitters ASAP to get it repaired / sorted out if needed

(hopefully in time to save the tyre

).
The warning system runs off the Anti-lock Brake System (ABS) / sensors and not pressures again as "DaFlake" states but I thought that getting into all that would be a little bit "techie" for you "skat"

.