Chimney and roof surveyor recommendations

[ElleB]

I am looking for advise on a trusted chimney surveyor to come and assess why there is penetrative damp in my chimney breast wall and sloping ceiling.

We had roof work done a few months ago and after this happened (the damp patch appeared) had the roofers back to replace all the lead flashing and do some repointing to the chimney.

Not a recommended roofer didn’t like their service and think their work previously has caused the issue.

But now I want yo make sure there is no leak and if there is any issue with the chimney stack itself letting water in.

Any recommendations for chimney/roof surveyors?

anyone used Alpine Surveyors drone service before?

The house is big divided into flats and the roof is really high up so for proper survey scaffolding is required.

Any advise help to find a trusted surveyor or expert who will find the issue and be able to resolve it?

already had damp specialist out and Aspect damp/roof expert.

loft is above my flat and no damp in loft or the wall in lift above chimney.

thanks