op l am the same height as you, 18 months ago I needed to lose 2 stone, l did it in 4 months with the Louise Parker plan....Its an eating way of life, healthy, and sustainable.
I didn't do any additional exercise as weight loss is 90% diet anyway and l spent my time meal planning and prepping rather than doing more exercise (I am reasonably active).
I started out losing 6LB a week then it averaged out at 3-4LB until l got close to my target weight when it slowed to 1-2LB.
I will always eat this way now, as it has given so many health benefits, less painful joints, more energy, no sugar cravings, no bloating.
I do stray from time to time and eat some junk but feel so rubbish l soon revert back!
You do need to commit to planning meals and getting rid of all processed food, the book has loads of simple quick recipes, l do 4 days planning, do a food order, keep my snacks seperate from my kids ( almonds, oat cakes etc) and repeat.
It really works and is not a gimick just really healthy eating and sensible portions.
The book is on amazon