Considerable head scratching followed until a little green light saying "service" was spotted on the dash. This was worthy of investigation so Mr T connected his computer machine to the T4 and it got very excited. the failed belt had caused the engine management to spot 4 faults and conclude also that someone was trying to steal the van so it had turned everything off and gone from "limp home" mode to "full blown sulk".
A positive though, with everything now set back to normal there is every chance that tooorrow morning the T4 will be making noises again and moving under it's own power.
Thats not all, I have a clio outside with a flat battery after even though I had the right keys and remote unlocker it insisted I was trying to steal it and it too went into "sulk".
In the yard is a very nice Xsara that is convinced it's air sensor does not work and has gone into limp home too.
This modern technology is absolutely fantastic when it works and a total pane in the glass when it does not.