Result, well sort of.
Did a compression test
Cylinder 1 - 120 PSi / 8.6 bar
Cylinder 2 - 110 PSi / 7.5 bar
Cylinder 3 - 110 PSi / 7.5 bar
Cylinder 4 - 110 PSi / 7.5 bar
Good news.
I cranked it over with jump leads and not plugs in plus disconnected the fuel pump relay to build pressure up. Mainly cause I replaced the buckets and they obviously haven't got much pressure in them.
So plugs back in and fuel pump relay in. Much cranking over and nothing, nothing, nothing and then something catches

and then nothing

, nothing and then the battery dies.
Over comes my mate's Galaxy and out come the Jump leads. Turn it over and it's sort of spluttering and catching and nearly going but the battery hasn't got enough juice in it and it's really trying to start. It does look like the pressure is causing it

.
So I've got to charge the battery up and then give it another kick in the knackers and see if it makes a difference.
Thanks for all your help

and I'll keep you all updated with the progress after I get the battery charged up.