In reply to RM199:
Ive been for the last two years and weather permitting I'm sailing to the island next Tuesday. Your official baggage allowance is 20kg per person, no one bag must exceed 20kg. Im taking a duffle bag with my kit which will go in the hold, this will be deposited at either the campsite or what ever accommodation you have booked by the Lundy staff. They will ask specifically for climbing bags with ropes inside and these will be loaded last and unpacked first so you can head straight out climbing. Technically your allowance is 20kg however this is not strictly enforced, this only becomes a problem if you have to fly either way. If you're on island with over 20kg and have to fly, you can negotiate leaving a bag which will be brought back on the next sailing, I have done this in the past. 20kg is not a lot of weight if you have twin ropes, a full rack and a 100m abseil rope. I will be taking my abseil rope onto the boat as hand luggage.