You may find the documents here useful when training your teams.
Download Hints and Tips for your teams.
Ashdown District produce a useful training guide for teams that are preparing for the Overland Hike. You can download it here. Please note the training sessions listed are for Ashdown District teams only.
If you are looking for recipe ideas these expedition based ones are great. You will need to adjust quantities for your team. Have a go at something other than a boil in the bag meal! Thanks to Harborough Explorers for sharing them.