Topcashback are currently offering £5 cashback when you purchase a trial box (£4.50). The box contains all the ingrediants and recipes to prepare wholesome food at home.
Choose the most popular Discovery box or opt for a Vegetarian, Light or Gluten-free version. Once you receive your box, just follow the recipes, adding 4-6 items of fresh food, and enjoy a delicious meal for 2-4 people.
This is a subscription service though, so make sure you cancel after receiving your box if you do not wish to continue.
As another option to the cashback, you can also get a box for just £1 instead by following this link. This will give you the meals but no cashback.