09 petrol, not starting.

[Gazza88]

I have an 09 Mondeo 2.0L titanium,  

It won't start, it tries to turn over but it won't fire. I can hear the fuel pump running, have checked the spark plugs, (when I say I, I mean my uncle the mechanic)  there just doesn't seem to be any fuel getting to the engine, some one suggested the injector relay, but i can't find where that is ment to be. 

So my questions are as follows :

1) where do I find the injector relay 

2) what else could it be? 

Any help with be very much appreciated