Yeah all the houses being sold round here reminded me of that and of course houses aren't as easy to sell as a 24/7 market. People always complain about Bitcoin volatility yet everyone is suddenly selling houses to avoid CGT so I have noticed a lot of 'Sold' houses are falling through. I would guess also due to the chain nature of the market and the choice of new housing stock some are pulling out to get a better a deal putting pressure on sellers by pushing things close to the governments stupid tax deadline.
I hope you manage to get yours sold though MIke!