Can also say that my current experience of selling in London is that a) very few listings and b) those that are listed are reducing price and still not selling. It's not exactly the same all over London, some pockets easier to sell in, some worse, and obviously some properties will sell more easily than others, but the market is pretty dire for me and a couple of other friends trying to sell at the moment! Pretty sure that those of us actually in the situation right now know more than those who aren't even on the market deciding they could sell easily. The estate agents talk a good talk and I thought that too until we actually went on and realised there are very few buyers out there at the moment, and all the similar properties are also not shifting.
Also, and of more relevance to the OP, the same seems to be happening in other parts of the country. Have a family member trying to sell a property in Bath, on one of the best streets, amazing Georgian townhouse. The kind of place that rarely comes up and would usually be snapped up. They've just had to reduce by 10% and the market there seems to be v slow too.
I think with areas where there are high prices and where traditionally a lot of buyers would be those cashing up and leaving London, they may also suffer a knock on effect as sales volumes and prices drop in London.
Who are you marketing to OP? What kind of buyers generally buy at that price range in your area?