This was a solo visit by Nick in the end! Having crashed to the far end of the pond with a hand held bat recorder all I had to show was a number of Common pipistrelle in the 90mins of recording plus a couple of Common frogs serenading (bit late for that?) so I came home feeling it was not worth it. Checking the results of the static recorder I left by the car it was nice to find recordings of both Common and Soprano pipitrelle, Noctule and also a Myotis bat species. None of these were in great numbers but certainly would have been a more interesting spot to stand. Not sure about whether it is worth adding bat boxes at this stage. Another visit may be worth it.