HI,
I had same prolem with my hippo
would start fine from cold but if you tried to start it after you had been out for a run in it all it would do is turn over and not start.
would start ok when you left it for maybe an hour or so.
I tried the camshaft sensor but wasnt that so got a land rover technician with his box of tricks to plug into it .,
result was low pressure fuel pump was on its way out changed it and no further problems.
hope this helps.