A3 won't start?

Got a problem with our Audi A3, its a 1998 model.

Car was sat for about 2 months with no use, and obviously came back to find a dead battery.
Tried jumping it but it just cranks over and doesn't fire.

Have checked for spark, its sparking.
Have renewed the petrol with fresh stuff.

Now, the problem is it isnt fueling. When you turn the ignition on the fuel pump doesnt prime, and when you try to crank it no fuel comes through.

Have tested the circuit and there is no power going to the fuel pump fuse, so the problem lays between the battery and the fuse.
In between these is the relay? I've replaced that to no avail.

If you give a live feed to the fuse then the car starts and idle's happily, so the fuel pump works!

The problem is definately before the fuse but not the relay, what can it be?

TIA for any advice really annoying me know!!!