[SRman]

The RT bus - predecessor to the Routemaster and also a London icon from WW2 until 1979. It introduced jig building and standardisation on a large scale.

Mallard and Flying Scotsman - known the world over.

Rolls Royce cars, still the ultimate status symbol, probably more so than any other brand - I know there are dearer and more exclusive cars available but a Roller still means more.

Cunard's ocean liners, Queen Mary, Queen Elizabeth and Queen Elizabeth 2.

Model T Ford.

 

[SRman]

The Mini: I never thought of that one but you are right it was (and still is) definitely an iconic car and design concept.