Bulb new customer

I am going live tomorrow but haven’t received my electric key??

What do I do?

Just continue using your old key until you get your new one

My old key is a British Gas key though will this work?

Do they have to change meters over too?

Or does everything stay the same because all my electric is staying on as we speak but they are meant to take control today?

Your meter is still BG until your new key is " married" up with your meter. NO they do not change meters, the only thing that changes is your key. You might want to leave them a message on chat asking WHERE the hell it is.