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I agree with your observation. A bit more information for you is: they are small moth-like insects and have two pairs of hairy membranous wings. They are closely related to Lepidoptera (moths and butterflies).
Thanks for the info :),
Do you know which species of caddisfly it is?
I am not sure which species, I will do some more research and get back to you as soon as possible.
Lat/Lng: 53.1, -1.0
OS grid ref: SK6757