I do some pest control and this time last year I had done about 30 wasp nests - this year one, so if thats anything to go by it should'nt be too much of a problem. This time last year we had had 3 bee swarm calls but I've only had the one so far which is now safely hived - my first !
There wont be many this year i have treated 6. 1 more tomorrow last year up to now i had treated about 40.. Treated 25 around the estate where i live last year and i havent seen a wasp here yet