I have a seat leon 1.6 16v 2001 when its cold it starts first time and drives perfect but if i switch the engine off and leave it a few minutes when its hot it has trouble starting any ideas?

It sounds like your Seat Leon may have issues related to the fuel system or the ignition system. Common causes for hot starting problems include a failing fuel pump, a faulty crankshaft or camshaft position sensor, or issues with the ignition coils. Another possibility could be a problem with the engine coolant temperature sensor affecting fuel mixture when hot. A diagnostic scan could help pinpoint the exact issue.