30m six way RCD protected heavy duty extension lead
13A weatherproof double socket extension lead (RCD and USB options) – Tough Leads
Leisurewize Mains Site Extension Lead 25A RCD Trip – Urban Auto
RCD Extension Lead Safety Circuit Breaker Camping Hook Up Gardening 0.5 to 15m | eBay
13A 1 Gang Heavy Duty Black RCD Extension Lead with Rubber Cable – Cinemattag LX
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: DIY & Tools
RCD Extension Lead with 30mA RCBO MCB Leakage Protection, SAFEMORE 4 Gang 13A Fused Power Strip with 3M Heavy Duty Extension Cord for Pool Pump, Power Pressure Washer: Amazon.co.uk: Electronics & Photo
40m RCD protected single socket 13amp 2 5mm cable extension lead
13A extension lead (RCD options) – Tough Leads
13A 4 Gang Heavy Duty Orange RCD Extension Lead with Rubber Cable – Cinemattag LX