Hi Whirly Yes I had forgotten that route. The only time I have been that way was in a AS355 Twin Squirrel (with an ATPL(H) at the controls). I was most amazed that we were told to hold over the fuel farm, before crossing the active. It seems a very vulnerable spot to hover, with all the heavy metal taking off & landing.
Yes it did seem nerve racking & I was just the front seat passenger!
So are S/E helis allowed across Heathrow?