I was just enjoying the early Autumn warm weather with a lie-down in Stroud Green, Newbury, while my daughter played with her friend. After a while I realised that I was surrounded by thousands of daddy long-legs which seem to be swarming around the park.
It seems it is a good year for them. Their other name is "crane flies".
Fortunately they are harmless and seem to spread themselves out so thinly that they don't even cause a nuisance.