Intermittent starting issue.

Got an issue with the truck starting atm, when turning the key to start occasionally I get nothing, battery and oil lights on, then pre-heat symbol on ok, then the last turn to start there's nowt, but after a few tries it kicks in and all is good.
This has been happening for a while, since then I have had the starter off to check function, solenoid seems ok and starter engages ok.
I had the feed from the ignition to the starter break in a couple of places, so decided to replace the engine bay loom ( from Autosparks) , pretty straight forward job.
Would welcome any thoughts on what to check next, does seem electrical to me.
One further thought is, I used together an engagement noise when first turning the key which I presumed was the starter solenoid, but not heard that for a while, but most times she starts ok.
Cheers in advance
Lasher

Have you checked the relay behind the fuse block ?
The part number is YWB10027L

Ignition switch?

Thanks guys, the relay and ignition make sense, be on it this weekend, let you know how I get on.
Forgot to say vehicle in question is LR 90 2.5 19J 88,000 miles and in good nick!

You can buy the ignition switch on its own, you don't have to buy the key barrel/housing.