I am at home today and noticed that there were four young birds in the water bath that is the cover of the trampoline.
They may be young goldfinches but I have not seen them before.
They look similar to a sparrow at the front end with a light brown colour,but at the rear end they have black and white bars on the rump and black and yellow bars on the wings.
I will try looking them up when I get chance,but I thought that you ornithologists on here would be keen to help with the identification.