There's a website for Derbyshire bird sightings and swallows have been in the area for weeks but I haven't seen any yet, we tend to have house martins and swifts in my neighbourhood...expecting to spot the first ones any day now.
How lovely Robinia, I'm a bit too rural to get swifts but when they fly screaming through the towns it's such a wonderful summery sound that reminds me of holidays abroad.