This post is by way of an apology to Canon, who made my new telephoto lens. I said a week ago that its image stabilisation was useful but I did underestimate its benefit.
This photo was taken at 1/80 sec, f8.0 and a focal length of 260 mm (nearly full zoom).
The wasp? Delta arcuata, one of our common mud-daubers. Adults stock their nests with caterpillars for their larvae but are vegetarian themselves, feeding on nectar. Many people are frightened of them, but unnecessarily: they can sting but are not at all aggressive.