Neewer® Black Aluminum Alloy Quick Release QR Plate Adapter with 1/4"-3/8" Screw and Bubble Lever for DSLR Camera Tripod Monopod Stabilizer Ball Head: Amazon.co.uk: Electronics & Photo
UTEBIT 50mm Quick Release Plate Clamp, Universal Camera Mount QR Clamp Built-in Spirit Level with 1/4 and 3/8 Screw Adapter Compatible for Arca-Swiss Standard for DSLR Monopod Tripod Ball Head: Amazon.co.uk: Electronics
BlackRapid Tripod Plate 50 Quick Release Plate (50mm) | London Camera Exchange
UTEBIT Camera 323 Quick Release Plate with QR Clamp and 1/4'' to 3/8'' Screw Adapter Compatible for manfrotto 200PL-14 and 323 RC2 496RC, 498RC2, 804RC2: Amazon.co.uk: Toys & Games
Magnesium Photo-Movie Tripod Head with Quick Release Plate - Cameragrip