Is a 1 hour intumescent Metal Meter Box required for '3rd amendment regulations'?

[Bjtk]

Hi
If anyone can help with this, I'd really appreciate it!
We've been quoted £350 (!) for a metal 'Intumescent' Internal Meter Box, measuring 400x320x160 mm. The Electrician says that as the box is in the hallway, 3rd amendment regulations apply because it is a fire escape. However there is also a sliding door (not key locked) on the same level with access to street in the sitting room and windows with outside access on basement level. Would these not be applicable fire escapes also? The flat is a rental.
Thanks a lot for any thoughts you might have on this.
Barney

 

[unconditional]

Does it have to be metal or fire-resistant?

Told a couple of people with otherwise perfectly good electrical equipment in wooden/mdf cupboards to make their own liner from fireboard...

 

[Octopus]

For what it's worth you need to consult the local authority, not faceless people on the internet.......