13A 4 Gang Heavy Duty Black Extension Lead with H07RN-F Rubber Cable – Cinemattag LX
Heavy Duty Extension Lead UK Pin Plug and Cable, 4 Gang Way 2m Power Adapter, Multi Socket Mains Strip (Black, 2 Pack): Amazon.co.uk: Electronics & Photo
SMJ Electrical 50m 4-Socket 13A Heavy Duty Steel Frame Extension Cable | Power & Solar | Maplin | The Electronics Specialist
10m double socket heavy duty 13amp black extension lead