13A Splashproof extension lead (RCD options) – Tough Leads
RCD Plug to IP66 Single Socket Extension Lead Cable in Power Lead - Frabco.com
Heavy duty extension lead GFCI Surge Protection, SAFEMORE RCD extension lead With 3m Heavy duty Cable, 4 Gang 3680W, Plug Power Strip for Workshop/Garage/indoor - Yellow: Amazon.co.uk: Electronics & Photo