Most of London has had this coming - prices just can't keep on going up when there isn't enough equity coming in at the bottom. The market has indeed slowed and this started in April 2016 with the stamp duty surcharge (less investors buying to let, so less buyers overall). After the EU ref the market stalled all the more, and continuing challenges around Brexit have led to an imagined or indeed very real uncertainty for movers (buyers in particular) as to whether forking out so much money for a property is really a wise decision. Would you buy now at ?1.2m for a house in SE22? Or ?1.5m perhaps? Or even ?800,000. When the market's on the up of course this seems like a plan. When it's subdued and could get worse, with the very real prospect of a significant decline in prices then it's no wonder people are being apprehensive. At the moment if you want to get a queue of buyers you'd need to lop a good 25% of the likely value (whatever that is, who knows) and use that as your asking price, and even then the interest might seem underwhelming... most buyers are offering below the asking price even if it's competitive.