The other presenters on the BBC TV coverage apart from Mcenroe were ex-British tennis players, Sue Barker, Andrew Castle and Tim Henman as well as Boris Becker. If you check out the All England Lawn Tennis Club website it gives the info in regard to 90% of the profits going to the LTA and the rest being retained by the AELTC itself. Really you can't expect people to prove a negative. If someone is claiming 20% of the profit is retained personally by the monarch then it is up to that person to show something to back up this claim!