The post above this one is correct- the chosen supplier will get their preferred MAMCOP contractor to fit the meter. I would add that it is incorrect to say that the installation company will not talk to you, why wouldn't they?
I had a heart attack in Feb.
Stupidly I waited nearly 48 hours before calling 999/112 'cos I thought it was IBS, how wrong was I?
Anyhoo blue lighted to hospital near Joes house, in A&E for 1 hour and 20 mins screaming for some pain relief (it fecking kills FFS...... in more ways than one)...