These wasps are very common at the moment ( But like most wasps hard to photograph as they seldom stop ). I observed them around grassy areas where wasp holes were present. I wasn't sure if they belonged to these wasps the holes were larger than I would expect for a Wasp of this size. Perhaps they are parasitic?
Actually it's not a wasp, it's a bee, of the genus Nomada. They are common - I have them in my garden, and it must have been a good year for them as I don't recall seeing them before. I suspect yours is the same as mine, Nomada fulvicornis, although I did refer to an expert to check. They are parasitic on Andrena bees.