Xj6 1996 won’t start

Please help, I’ve just aquired a 1993 jag xj6 3.2 auto,
It’s been in a garage since tax expired 1997, don’t believe car has ever had an MOT and was put away at 3 years old, car came with no keys or fob etc, I had a key lock smith cut keys which work all doors and ignition, It has only done 24k miles from new and is solid, petrol was very low so I put a few gallons in, it turns over with jump leads but will not fire or start, Is this to do with Jaguar security as it has stickers on windows? How do I sort alarm or imobiliser out?

the key has a chip in it. did the locksmith pair chip to eco, if not won’t start.