A uk company to provide us with jammer for wireless alarms

Hi, we are currently looking for a uk company to provide us with jammer for wireless alarms, seems to be a large amount out there but not working, wireless alarms use GSM mostly. Is this somethink you have in stock？

Hi, there ime starting a security company and wish to demonstrate the vulnerability of wireless systems to wired. Both cameras and alarms. What can you offer in way of wireless alarms jammer and wireless camera jammer??

Looking for both. Are you uk based?

Alarms were aiming at are premuims such as verisure at or any others that will do this job thank you kind.