On 30/04/2021 10:33, R D S wrote:
On 30/04/2021 10:27, R D S wrote:
Recently I've noticed......

115 year old terrace, probably worth mentioning.

Yes indeed. That means it won't have concrete foundations to "modern"
spec. I'm assuming you don't have nearby trees of any size?

OK, just past Victorian but I think the construction is likely to be
similar. They didn't normally skimp on materials if you exclude the
single skin extensions at the back. I'd guess these are settlement
cracks associated with the new work, but I'd expect it to slow down and
stop. Apply filler and wait a year.