We’ve had 2 wildly different quotes for the same thing.
To remove all tiles, then felt line, re-batten and then replace tiles. Replace lead flashing to chimneys (3)
One came in at £6000
Another at £9250
I have no idea if one has substantially underestimated and the other is correct or the higher one is well over the normal price.
We are not in the South East for context. We are still waiting for the 3rd quote....