Here's my collection.
1. Tecnic boot, Martin leather, 1970s.
2. Tecnic shoe, Martin leather (probably), 1970s.
3. Alfred Sargent shoe, brown zug grain, recent, now discontinued.
4. Cheaney made for Herring shoe, brown grain.
Tecnic and Lotus were very good makers in their day and specialised in this style.
You could broadly call them 'army officer' styles - shoes or boots to be worn with uniform. The style "Aldershot" is not accidental.
I think they are fantastic quality - Tecnic is a bit nicer than Sargent as it has better leather. The Cheaney is fantastic quality.
It's a shame that you can't buy this quality any more (or it is very hard to find).