theres a guy around the yorkshire area, he is very recommended and has a very good rep ask Kells. his number is 07985144166 ive got toad ai606 on mine (total clousure tilt and interior sensors) you get alot of option for that alarm such as remote start (most say it invalidates your insurance) can send texts to your mobile if car if triggered proximity sensors and all that same as clifford but id rather stay away from clifford as after 5 years they go tits up, as my mate had a realy expensive one and we was in 3rd lane on the mway and the anti-jack kicked imoblised the whole car we sh!t ourselfs. oh the other good thing toad ai606 has is anti jack when you close the door and start the car the locks close (thats if you have central locking)
hope that helps