The leaves on the lime trees in the village are providing a natural platform on which red and black ladybird larvae can pupate and eventually hatch out. Here are some pictures from the other day (22 September 2021) showing the various life stages. I think the final-stage yellow and black winged adult may have recently emerged from one of the pupae (or are they late-stage instars?). There are still lots of these intriguing small creatures around if you want to look for yourself. Try the leaves on the lime trees that border the tarmacked road between Olympic Park playing field and the cricket pitch.
I think these bugs may be Harlequin ladybirds (Harmonia axyridis) which are an invasive species that entered the UK in 2004 and have rapidly become widespread. They are considered to be a great pest because they eat all sorts of other native insects and do not restrict themselves to feeding on aphids like our local ladybirds.