Chimneys and flues: Don't forget the neighbours!

I need some advice please, on the left to my back bedroom window is our neighbours chimney, it's practically the same height & the distance is very close, he's got a log burner in the conservatory stated as above on the left, we get all the smoke on our conservatory roof, it blows every where, we can't open our windows or open our back doors because of the smell, hope to hear from you soon, thanks Mrs Phillips.

Hello, our local CoOp has been sold to a developer who is seeking Planning Permission to convert it to a takeway/restaurant. It has a flat roof and many houses directly overlook it. They have applied for a 1 m flue which will be below ours and there is only a driveway distance between it and 3 properties beside it. Behind it are 6 other properties overlooking it with their gardens approx. 6 metres long.

What are the regulations for the height of a flue when it is surrounded by residential properties,does the flue have to go above the ridge line of the highest property, which is also a listed building?

I live in a semi detached house. My next door neighbours were getting a log burner fitted. After a couple of hours of drilling & banging, my electric fire was knocked from the fire place by falling bricks & debris. The workman had accidentally knocked a hole through to my property. He said he would repair this but temporarily fill the hole in. I am really concerned that there has been structural damage & party wall/chimney breast weakened.

I live in an old 3 storey weavers cottage dating back over 300 years old.
The cottage I live in is 3 storey while the next door neighbours cottage is 2 storey.
We share a party wall.
Recently the property has been bought by a couple who plan to turn it into a holiday home. They also own a larger property on a new estate just recently built behind our row of cottages within walking distance.
As soon as they acquired the next door cottage, the new owners started gutting the whole inside back to the original stone brickwork.
This has resulted in the original fireplace being exposed which involves our party wall on the first floor. The separation between the 2 properties where the old fireplace stood is only one brick width.
The intention is to install a log burning stove. The chimney flue runs up our party wall to a chimney pot located on our roof one storey above their cottage.
This means they would have to access our roof to install a flue down to their lower floor to connect to their log burner.
The chimney pot is above our third storey bedroom located on the edge of our roof.
I am very concerned that the new owner will try to access the chimney without our permission.
I'm not keen on having strangers on our roof messing with the chimney or the smoke from a wood burning stove spewing out over my car parked outside our kitchen door on the lower level. We recentlythis year had all the front facing window surrounds sand blasted back to the original stone which are now a beautiful honey colour at considerable expense.
We have not been consulted on any of this building work concerning our adjoining party wall especially the matter of installing a log burning stove and the consequence of the flue running up all 3 floors of our property and the smell or damage from either smoke or heat radiating from the flue.
Any suggestions will be very helpful.
I'm 67 and my mom is 95.
The new owners seem pleasant enough and have eased my worry about the chisling out of the old fireplace which often seemed like it was coming through into our kitchen.
Should I contact the local council with my concerns.
Thank-you

Are there minimum distances that need to be adhered to for trees? Given the wood burner will only be used in winters in a end of garden cabin when everything is moist I imagine there is no fire risk