Purely anecdotal:
I'm in the process of selling a 3 bed semi due to bereavement in the family. First offer came in after only 5 days on the market, 5k under asking price. Was ready to accept when 3 subsequent offers came in ....all in cash.... ....the best being 2k over asking price. This is in South Yorkshire, not central London.
Not wanting to put a dampener on proceedings here but it seems that the HPI monster is not completely dead, yet.