Question Author
Hi Everyone I am delighted at the response to my question.
terambulan
I do not think, in fact I am almost certain, that councils in Cornwall no longer offer that service. In fact I think you have now got to contact private Pest Control companies.
roosi and fredwalker
It would appear you both have similar ideas on how I should treat the problem. The Wastbane piece of equipment seems very interesting. Have you any idea where they can be purchased. At the moment my wife as hung a few jars containing jam and water on the branches of the tree and and they are catching quite a few wasps. Probably there are more wasps around now they have heard about the free jam.
abstract
I have left your reply to last because I must admit although you suggestion was the least practical it gave me the biggest laugh. Your idea would not work because I cannot fly
Thanks for all the suggestions