Of course catching this moment on film means that Cate and Clive are certainly not alone. The assistant directors and locations departments have people all over the park to stop traffic during the takes, two carparks are full of costume and makeup busses, catering vans and generators. The air is positively crackling with sound and video links to enable everyone to see and hear what’s happening whilst as Cate and Clive ride they are followed at speed by two cameras mounted on a pursuit vehicle – not to mention the other camera crew catching the action on a long lens from a distance.

When the final sequence is cut together however all this will melt away and we’ll be left with the feeling that we are witnessing one of the most private moments in the Queen’s life - or so we hope.

Justin