On the 3 July 1938 Mallard was recorded as reaching the awe-inspiring speed of 126mph on the East Coast Main Line.

A once in a life-time international family reunion will be held at the National Railway Museum in July to mark 75 years since the garter-blue Great Hall icon became the world's fastest locomotive.

The other five remaining Gresley-designed A4 class locomotives, two of which have been repatriated from North America, will join their famous sibling Mallard on display.