I don't think it's a diet that's written down anywhere as such. Just took some advice from Olga at Lopwell and followed that. I approach it not as a diet but a long term (1 to 2 years) change of habit, it was about as much what I don't eat ass what I do.
It's high protein with most protein taken at breakfast, less at lunch and nigh on vegetarian by dinner. Low sugar (still take some in tea and coffee), low carb (baguette and a wrap each day), a little milk but no cheese, chocolate, cake, crisps , pastry, spuds, pasta or rice.
I rapidly discovered ketosis, that was a shit ten days, Olga didn't warn me about that!
I'll drop my weight to about fourteen stone, a loss of some nine stone and by then I will have changed my diet slightly and introduced a touch more exercise.
I have to be bloody selfish with what I eat, it has surprised me how much others can be annoyed at my"fussy" diet. Ignoring them has probably been the hardest thing about the diet, especially if eating out and I chose to have a couple of starters only.