code MRFZJMXD
valid for a week
They deliver you snack boxes with fresh fruit, dried fruit, nuts, seeds, etc Boxes are £2.99 each, delivery is free. You can set up your preferences across their whole range of snacks, then have your boxes delivered by Royal Mail weekly on any day Tue-Fri, or even several different boxes a day, you can also send one-off boxes to your friends/relatives, etc. They say their boxes contain three portions each, although I'd say it's more like two generous portions. They also say their snacks are preservatives/additives/etc free, so I guess the price is well worth it.
The only downside I noticed so far is that their choice of fresh fruit is pretty limited. But I'm happy with the rest.