WH Statesman randomly wont start

[Smithy 5201]

Hi help or ideas please, I have a WH 5.7 Statesman which has just started to randomly not start. Turn on ignition, everything powers up but turn the key tostart position and will not start. Checked all relays and fuses, and wiring to starter motor but will not start, then after 10-15 minutes it starts. Tried moving the auto gear shift from park to neutral several times but does nothing. Can anyone suggest what the problem may be. Thanks

[edals]

Have You tried Both Sets of keys ? Does it turn over or is it just dead ?