Coupler for Three

Does anyone know of any pet shops in the UK that sell the coupler for three dogs.

Found loads in the States but a friend is coming over and has asked me if I need anything and after searching the internet could only find one supplier and a tad expensive as they are leather and leather doesn't endure the heat we have here so I would prefer either chain or nylon webbing.

Hi, I found this website with chain triple couplers.
http://www.petcetera.co.uk/acatalog/...OW_CHAINS.html

Thanks I actually looked at Petcetera as I used to get all my dog equipment there when I was in the UK but when I did a search for coupler it came up with no items.

Will get them delivered to my friend who will bring them over because £10 postage (at least that is what I paid for the collars and leads) is rather steep.