Not one that I've heard of. But that routing is pretty easy on any map or sat image because it goes in from the north over Mad Bess Wood, just west of the Ruislip Lido and its standout beach in the trees. Then over RAF Northolt, east onto A40 all the way to hangar Lane Gyratory. South onto North Circ, follow the grass area on west side aiming south for Kew Bridge (dropping over Gunnersbury Park to 750ft by bridge) then east along river all the way to Isle of Dogs.
There is an overlay for GPS - but it is a bit "spiky" for the true routes. Best stick to the Heli Routes chart.