Michael Mosley's diet does seem to be based on common sense and is a real chance to lose weight and start a better relationship with food. For me, I've stopped eating completely between meals, cut out bread and all wheat-based foods, no cakes biscuits rice pasta - almost no carbs. No sugar. I know it's not sustainable but if it shifts the weight to start I've always found that I have enough motivation to keep going! Walking every day, drinking lots of water, having lunch and supper off small side plates and not a dinner plate, eating slowly and making food interesting, trying new recipes all seems to be working. My ideal would be to lose the weight and then revert to 5:2 eating - having very few calories 500/800 - for any 2 chosen days each week and eating normally but not large portions for the other 5 days. This would allow me, I think, to immediately cut back if it looked as if the scales start showing an increase in weight again.
Most importantly, I have been determined to eat my daily rations within a certain time, say between 10am and 6pm. This means that I am then fasting for about 15 hours. This also sees my weight drop and my digestion truly benefits from a rest.