No, no you don't, and I also think it's cheap, bearing in mind professional co's do not mark this up, it's often paid direct by the customer to the local force, why should the public pay for the police time for admin alarms?
The payment is for the administration process, it covers a plethora of things.
http://www.securedbydesign.com/security-systems/Security-Systems-Policy-2015.pdf