Access rights for necessary maintenance work in linked housing

[UglyMinotaur]

I live in a semi-detatched property want some work completed on my houses (necessary maintenance including soffits, fascias etc). My neighboour (attached) is refusing access to his property for the erection of scaffold - necessary as the work includes roofing that is above a conservatory (scaffold needs to span the conservatory). Can he legitimately refuse me access?

[buildersmate]

This situation is almost certainly covered by the Party Wall Act 1996, which applies to maintenance along the boundary between 2 properties, and not just to walls.
Download and read the booklet in this (Government) link.
http://www.communities.gov.uk/publications/pla nningandbuilding/partywall
Then probably best to show him the booklet and try and pursuade him to back off. You could invoke the Act, but it would probably cost you a little bit of money. Better to try and demonstrate that you are actually able to do this in law. You will have to reinstate his land to its previous condition.