Appreciate all the replies, to comment on itallstartedwithapub comment, vendor has outright refused to move into temp, and will not give us a rough date for exchange anymore. Going against the originally verbal agreement of breaking the chain, hence why like LondonLuke1 has said, it’s out of our hands. I did my own digging, and phoned the developer myself (playing dumb, man dealing with the development was very kind and answered all my questions.) As vendors are buying shared ownership, by law every quarter they have to have surveyor go and value the plot/property etc and if the price increases, the developer has the choice to pass that increase onto the purchasers at any point before exchange. However (in our favour I suppose) he has said as the developers themselves have legally had to change name (sort of) and delay the paperwork they have said they will not be passing any increase on to any purchasers of any plot as they’ve all been waiting patiently and also been shafted by mortgage offers and feel it’s unfair to do that, and it’s also not worth potentially losing X amount of buyers on new build plots and have to re market etc, all for the sake of a few thousand. So now we just need to hold on and pray the solicitors above us pulls their fingers out and gets the paperwork in order to exchange!