Hi All, hoping somebody might be able to offer some advice please.....

Went to the car after a week sitting in the garage and after trying to start it, it just won't fire up.
The battery seems to be fine (although I do disconnect it when parking the car for a few days), the fuel pump primes when turning the key, I hear a few clicks which go off (that I assume are relays), then the engine just cranks away?!? The car is fitted with a key fob immobiliser which functions fine as you wouldn't even get the car to make any progress without the LEDs going out. I did look at the crank sensor which looks covered in oil, but depending on what other threads you read some say that it won't be this at fault if the engine cranks??? Any help would be appreciated as it's never not started....

Thanks in advance