They decided to construct a property along the boundary dividing our house and business and their new building. However, they did keep a 1 meter gap as we had windows along our wall that faced the new buildings.
No real problem for us, as we still had views from our windows.
However, they then decided to build a high (7ft) boundary wall all the way down our garden boundary to the top of the sea wall and it looked awful, plus it cut off the sea breeze that we used to have which crossed our garden and it cut off our views of the beach going North towards the palace.
FIL was a high ranking cop back then and he spoke to someone at the palace (our house and compound at one time belonged to the palace) and a couple of officers with all the gold braid turned up and they ordered that the wall height had to be reduced to max 5ft in height for the last 50ft down to the sea wall. This meant we kept our sea breeze and our beach and sea views.
I suspect that there was some sort of royal restriction placed on the beach front properties and the new owners were just trying it on. Either way, the wall height was reduced within hours.
I’m sorry about your predicament, but the chances of doing much about it are very slim. Maybe get a bit of legal advice on the legality of what’s been built, then go from there.