This is just my opinion on the house situation all public info avail on internet. public Facebook/right move
Parents bought Banchory house for 650,000 in 2014 didn’t sell it when moved to Balerno paid 700,000 sold it for 765,000, sale went through March 2018. So a lot of money to invest, no interest at bank, stock market very dodgy , so best option would be property. Neighbouring house comes up for sale for less than they paid 4 years previous due to house history and downturn in property price. Best investment don’t blame them if this is the case. Anyone can get the land registry for about £15. But I am pretty sure what name will be on them.