Jane wrote:
I never knew we had crickets up here in the wilds of Bolton, but this
morning my garden was visited by a very noisy, bright green insect (cricket?
grasshopper?).

Yes green bush crickets seem to be on the increase. They are lovely
things, do no harm to plants and make a very pleasant noise at sunset.
They seem to have arrived/come out earlier this year and last night
were quite shrill as it got dark.