Shared Mortgage issues - help needed

[DaveyK]

My father died recently and surprised us by leaving a World of mess for us to deal with as Executors, as he signed off the family home to a Shared Mortgage with BOS. Our mother is now not in a fit health condition to still live in the home alone and it really gaols me that this organisation A) Talked him into signing up on this loan & B) have him signed up for a Tier 2 agreement that has had him pay north of £500 per month, have to pay off the original loan AND pay 65.62% of the equity to them on the sale.
Does anyone have any experience of this situation, and how to get a fairer result when I need to approach BOS ???
All help will be gratefully appreciated

Don't know if you have already found it but there is a wikipedia page about these products -

https://en.wikipedia.org/wiki/Shared_appreciation_mortgage

Mentions stuff about class actions, victims groups, etc. and adverse coverage of these products in media/Parliament.

Unfortunately it does not look like there has been success in getting any redress.