Master Mounts 2322L-2 Portable Travel RV TV Mount Locking Articulating Arm Allows 1 TV to be Used in 2 Locations, Keeps TV Secure in Moving Vehicles up to 50" & 200x200: Amazon.co.uk:
TV mount Moving Wall Media | Architonic
Nexus 21 Apex - Moving Wall Mounts - Concealment Systems - AV Supply Group Pty Ltd
LCD141L Anti-shake Caravan TV Wall Bracket w/ Articulate Aluminium Arm & Detachable VESA Mount - Allcam Affordable Ergonomics