Yeah i freely admit the cabinets may not be BT FTTC, i just assumed as they were next to existing ones. As has been pointed out maybe wrongly. I will try and remember to take photos if im in the area again.
One thing ive just realised is can you imagine in a few years with all these various cabinets an engineer from whatever company sitting there for 15 minutes trying to figure out why the key wont open it before they realise its not actually there cabinet

Looking at google images there already seems to be a fair few which look very similar to each other, i imagine in the future this will only get worse. Thinking about it you can imagine the comedy, though in practice i imagine it could be a nightmare (maybe different colours for each company will be needed?)