Check if your MP has signed up to stop boris closing HGV inspection unit

Maybe I'm not understanding the political system and checks and balances here. I wrote my Member of Parliament who, according to that website ,is Jim Fiztpatrick. This is what he wrote back.

Dear [D. Generate],

Thank for the e mial. I am sorry but as a Minister I cannot sign EDMs but I will follow this up for you, not just as your MP but as a fellow cyclist and former Road Safety Minister,

Best Wishes, Jim
Eh?