Sadly they then make us follow A lumbering line of jumbos to a hold for a runway departure. They just can't get the idea that all I need is somewhere reasonably flat and a route nothbound away from the approach/departure path, which is pretty much what Heathrow provides.
It is a sad fact of life that the people who make the rules are not allowed to apply common sense all the time. The ATCOs would like nothing more than to allow you to use a spare, flat bit of concrete (or grass) to get in and out without bothering the big boys. Unfortunately they have to follow the rules set by the airport, who in turn have to justify their rules to the CAA/HSE. This means that almost all of the flexibility of a Heli is lost and delays for all involved.