A great article by MyFitnessPal summarising how exercise and diet can play a role in weight loss.

Walking 4-5 times per week for 60 minutes at a moderate intensity (5-6/10) or 30 min at a vigorous level (7/10), achieved by adding periods of jogging, and watching your diet can set you up for effective sustainable weight loss. Adding resistance (weight) training and additional time spent spent exercising can add you your overall energy ‘burn’ and fitness level.