13A weatherproof single socket extension lead (RCD option) – Tough Leads
Extra Large Weatherproof Electrical Box (32 x 22 x 13 cm), IP54 Waterproof Outdoor Extension Lead Cover, Protect Outlet, Plug, Socket, Timer, Power on OnBuy
Outdoor Power - IP Rated - Portable Power - Masterplug UK
SLx 90025PI 20M Garden Splashproof IP54 Rated Extension Lead with Thermal Cut-Out Protection from Lawson HIS
1pc Outdoor Electrical Box Ip54 Waterproof Outdoor Extension Cable Safety Cover Outdoor Socket And Plug Protector Heavy Duty Large Size Green Black - Business, Industry & Science - Temu United Kingdom
Weatherproof an extension cord - Tommy Tape Self-Fusing Silicone