After three days rain and people mentioning that there are very few hovers about after the rain, I waited till the afternoon and better weather to take a walk. It was quite warm at 20c and very little wind but was overcast on times. When not expecting much you always end up with a good day, I realized this when I got out of the car and the first hogweed plant has 7 species of hoverfly on it. In a 1 mile round walk hoverflies were everywhere and in huge numbers. I recorded over a 1000 flies of 45 species on the Hogweed and supporting plants, which was a new daily record for me beating last years 43 at Blaencaerau around the same time of year. With so many hoverflies I didn't notice much else except for a couple of longhorn beetles Rutpela maculata and some tortrix moths in Pammene aurana.
From photos Roger Morris reckons it's Chrysotoxum cautum [worth a try though 👮]