Might be early days or just wishful thinking but I’ve just seen not one, but two different blue tits check out a birdbox I have on the side of my shed. Never had anything nest in it for 5 years or more. Fingers crossed!
After checking out the box for the last month, yesterday my tits started bringing nesting material into the box.
Last year no birds built a nest in that box (the one with the camera) but there was activity in the others.
I've got tits too. Just moved into the nest box that I put up last autumn, after I closed up the hole in the fascia they were nesting behind previously. Coming and going with stuff.