The pertinent and non-personal parts of Forty-odd's email concerned changes to H10 now following the new line of the A40, the fact that after 12:30 City CTR is closed, which makes things slightly easier, and a recommendation to buy my own copy of Pooleys !! All the above is in the public domain, it's just that a kind person wanted to make my life a bit easier.
Also, as other people have mentioned, if you know of ( or are provided by a kind PPRuNer ) a contact to get a copy of the Military HLS guide apparently there's a very good brief in it about the heli-lanes. My blagged copy is waiting for me at home !!