Clothing/Shoes/Weather Gear: Bring an umbrella, it rained two of the 3 days I was there. Sturdy walking shoes, especially if chasing lambs to take pics :)
Photo Equipment: Lots of film to waste while trying to take pics of lambs :(
But also you can take pics to prove the sun did come out at some point, as evidenced by this pic of me at Robin Hood's Bay :)
Camping/Beach/Outdoor Gear: Well, my uncle brought his caravan. Good thing too, with all the rain we had!