Scrambled eggs and if you really want carbs at supper time (I don't) a slice of Paleo bread.
Mixed salad (cos hearts, shredded carrot, cabbage red and white) with a little dressing and a crumbled packet of crisps over it. The combination of crispy salad and salty crisps is delicious.
Now I know this is weird but I just love a tin of sardines in tomato sauce and half a fresh tomato well sprinkled with white pepper. 
Just that.
A smoothie made with avocado, banana and any fruit juice.
Avocado mashed with a banana is divine on Paleo bread. (I can't eat wheat or gluten free breads now)
I also love soup and have cups or snap-lock bags of it in the freezer door ready to defrost on the instant. When I make a batch of soup I always bank some.
My other weird favourite is to lightly fry a little onion in butter (tiniest bit) add sliced tomato (sometimes capsicum) and then cheese. Cook until all is melted.
Cheap cheese here is very fatty, so as it melts, the oil runs out and can be poured onto the seeds I shall later put out for the birds.
To think that London, or anywhere else for that matter, does not belong to any one demographic
