Generally, it is a good explanation of the "cross lease story". It correctly identifies the issues and pitfalls, and uses an example to illustrate a problem.
The reference to the Law Commission recommending it be abolished is now ancient - why hasn't there been any action on this front? (That will be another political football I expect)
It certainly highlights a Lawyer as being a professional that can advise a potential purchaser. I wonder if the non-mention of a Surveyor was an oversight or deliberate - as an experienced Cadastral Surveyor could/should provide the same level of advise - if not more....
...certainly if there are complexities involved such as:
no footprint change but (for example) the 'terrace' identified in the 1982 plan is now enclosed after an internal extension to the master bedroom
the Unit has been re-built on the same footprint - does this render the title deficient?
the internal fencing has been upgraded but has been placed in a slightly different alignment with the verbal agreement of the owners. Subsequently, a transfer is required...