A quick You Tube search reveals: (This Morning) Tom Watson discussed his 7 stone weight loss and type 2 diabetes as down to cutting out refined sugar and foods high in sugar plus exercise (weights and cardio). He mentions cutting out beer (high in sugar). Read Malhotram (Pioppi) and Mosely (Blood Sugar).
Bulletproof coffee also gets a mention!
This was on Good Morning and all helps to make the discussion more mainstream. Sadly my 10 year old came back from school last week and pointed at our coconut oil stating that his teacher had told him it was 'dangerous' (she had been using it and then read a magazine article deriding its' high sat fat content)
I don't think this community should get stuck in the weeds of whether you cut out sugar, white carbs or even all those healthy whole grains.
Tom Watson's message is that he made his changes gradually and on a rational basis.
He did not do the 800 kcal method though essentially both diets result in the same thing - a drastic reduction in carb intake achieved whilst eating whole foods and whilst I know the NHS is about to start pushing those 800kcal shakes for type 2s, I think Tom Watson's approach is the more achievable way.