Battery cut-off switch installed but that one night the owner forgot to turn it off after working on the car in the evening. He and his family were woken up after midnight by their fire alarm and smoke in the bedrooms.

Interior completely destroyed:

And screen:

I suspect the brown wires to the ignition switch or lighting switch shorted out:

Wires completely bare of insulation:

The main body panels largely undamaged, so rebuildable but an insurance write-off. The other MGB parked beside it escaped serious damage, just needs a new hood, bonnet repainted, plus detailing:

The attached house was extensively smoke damaged and is likely to be uninhabitable for at least three months.