So we're trying to buy in London. Market is crazy. We've been gazumped once and outbid numerous times. Properties around here are going for about 5-10% over asking price. We've seen a flat we like and have asked the seller if they will consider a lock out agreement. They've said no. This flat was off the market and then came back on and I'm uncertain as to why. I'm concerned about being gazumped again and for that reason was keen on the lockout. The flat isn't perfect but probably scored about 8 out of 10 in terms of criteria fulfilled. Wwyd??