An E-Type Jaguar, probably the most iconic design of car ever produced in this country and certainly since World War Two. It would have to be the original shape, not the later, more clumsy-looking versions built to appease the Americans.
David Odling, Altrincham, Cheshire
A wind turbine. Elegant engineering design that might raise awareness of the environment and the challenges faced in providing a stable energy supply in the future.
Gary Lock, Dorking, Surrey
A wind turbine to highlight the advent of an indigenous UK clean, waste-free, renewable, sensible cost, power generation future and the, hopefully rapid, demise of the obsolescent nuclear fission alternative.
Richard Young, Manchester
Bloodhound SSC, or at least its tail! It represents the cutting edge of engineering technology, our history of the pursuit to be the best, and is very British. It’s also being widely used for Stem activities.
Neil Dinmore, Derby
Clifton suspension bridge – an iconic structure and instantly recognisable as by Brunel.
Trevor Howard, Gloucestershire
Concorde! No contest.
Jeff Bulleid, Lidlington, Beds
Colossus, because nothing invented in the last 100 years has had more effect on the world than the digital programmable computer, but most people think that the Americans invented it.
Michael Cook, Gillingham
I think the Concorde in flight would be my choice because it is a British icon, loved by millions, flown in by only a few, before its time, and nothing has come close to it.
Robert Landragin, Enfield
I’d nominate Stephenson’s Rocket. The steam engine continues to attract a large number of fans and of course it is mechanical.
Richard Fung, Hong Kong
If plants, why not something along the lines of Sellafield, Port Talbot, Grangemouth, and Harland and Wolff?
Martin Myers, Herefordshire
The London Underground map.
Rob English, Camberley, Surrey
My vote would go to the ball bearing (Philip Vaughan of Wales), jet engine (Frank Whittle for England), the Falkirk Wheel (Tony Kettle of Scotland) and the Titanic (Alexander Carlisle for Northern Ireland), all related to terrific engineering and transport.
Geoff Miles, Poole, Dorset
The coins themselves are engineering wonders as it is. I would like to see miniature versions of a pound’s worth of 50p, 20p, 10p, 5p, 2p and 1p coins on the back.
Geoff Buck, Newton Abbot
The Crossrail project under London is currently the biggest engineering construction project in Europe. I think a view of one of the tunnelling machines breaking through somewhere would, on the back of any coin, make a spectacular and fitting tribute to all the engineering and construction staff involved in this wonderful project.
Ken Stonehouse, Chelmsford, Essex
The Forth railway bridge, an impressive piece of engineering and hopefully recognisable to most, otherwise a UK-designed car, possibly an E-Type Jaguar.
John Green, Darlington
The hammer. One of the first and most fundamental tools. Still as relevant today as in the Stone Age.
Simon Cotton, Lincolnshire
The one thing that best summarises not only the capability and attitude of the British engineer, while proving a service available to all, and additionally is a work of art is the Tamar Bridge.
Bill Loth, Reigate, Surrey
The Philae space probe. Travelling 6.4 billion kilometres through space for 10 years to land on a fast-moving comet only 4km across is an incredible achievement.
Vanessa Richards, Basingstoke
The Samson and Goliath cranes at Harland and Wolff shipyard in Belfast. Apart from the Titanic and its sister ships, Olympic and Britannic, other great ships were built there, including the Canberra and HMS Belfast.
Stephen Henderson, Birmingham
The spoked wheel of an express locomotive, complete with side rod, the wheel filling the whole area. The big, multi-spoked wheels are finely detailed and rather elegant. The crank details should give the designers something to work on.
Roger Best, Kingsclere
The transatlantic cable, as laid by the Great Eastern. This recognises the design, building and outfitting of the ship, the manufacture of the insulated copper cable itself, and the prior existence of the telegraph to make it all work. Also the sextant and longitude/latitude knowledge made possible by the ship’s chronometer.
Ron Pursell, Flookburgh, Cumbria
The Shard would be the natural choice.
Anonymous
My first choice would be Stephenson’s Rocket as marking the start of the industrial age and the linking of the UK by rail.
Terry Kelly, Bolton, Lancs
Project Bloodhound, partly aimed at inspiring young future engineers, would have coincided nicely with the coin designed by a 15-year-old.
K Wright, Kent