-
The property is ~1790 so its solid wall and the wall are very very thick so installing another air-brick might be a big task, although possibly the only option.
It's not that difficult, and the fact that it's old makes the brick removal a lot easier - the mortar and the bricks likely quite soft.
Tapping the council up sounds like the way forward though - you don't want to be messing with your walls because of their cockup.
@TW thanks for the reply.
The outside ground level has been built up over time and the council own the pavement that is now there.
The property is ~1790 so its solid wall and the wall are very very thick so installing another air-brick might be a big task, although possibly the only option.
I'm going to get in touch with the council as other properties on the street have drainage channels to stop water ingress - not sure why our house wasn't done at the same time.