Here is my link to get a free box (just pay postage). I wish I'd used a referral when I signed up - I think I got 25% off or something and a 4 person, 3 meal box was over £70! I'm still using them whenever I can get a decent discount or have referral credit though as I really like it, so you'll be helping me a lot too if you use this!
https://www.greenchef.co.uk/pages/resolution_referral?c=FIH-FQM0PL2IDUWP&discount_comm_id=87943761-508c-4e80-864c-aebe48c0d901&mealsize=2-2&plans_ab=true&utm_campaign=notification&utm_medium=clipboard&utm_source=freebies