I regularly have a ready meal from Waitrose or M&S on my fast days as its much easier to put that in the oven and know exactly how many calories I'm consuming. I cook on other days when I'm not worrying about calories, but just found buying ready meals much easier, especially when I first started this WOE.
I now bulk them up with extra veg, but it worked well for me when I didn't have the time or energy to weigh and look up calories for every little thing on my plate.
As far as whether it affects weight loss, I doubt it does if you stay within 500 cals. I'm losing an average of 2 lbs a week doing it this way (over past 12 weeks), so seems to be ok. All I would add is to not become reliant on ready meals but use them at times when you need something quick and easy.
I now bulk them up with extra veg, but it worked well for me when I didn't have the time or energy to weigh and look up calories for every little thing on my plate.
As far as whether it affects weight loss, I doubt it does if you stay within 500 cals. I'm losing an average of 2 lbs a week doing it this way (over past 12 weeks), so seems to be ok. All I would add is to not become reliant on ready meals but use them at times when you need something quick and easy.