toggler / snaptoggle HEAVY DUTY UK M6/M5 wall anchors not the 1/4 or 3/16 US version which no uk bolts will fit like many sold on amazon, THESE ARE THE BEST FIXINGS
Toggler Snaptoggle Fixing x 50 £23.19 – Smart Merchants Ltd
3/16-24 Toggler SNAPTOGGLE Heavy Duty Toggle Bolt (3/8 - 3-5/8 grip ra – Bridge Fasteners
Paulin 1/4-in Snaptoggle® Toggle Bolts - 2pcs | The Home Depot Canada
SNAPTOGGLE | Heavy Duty Toggle Bolts | Heavy Duty Wall Anchors
Snap-Toggle - Reliable Fasteners
TOGGLER SNAPTOGGLE BA Toggle Anchor with Bolts, Zinc-Plated Steel Channel, Made in US, 3/8" to 3-5/8" Grip Range, For 3/16"-24 UNC Fastener Size (Pack of 10) : Amazon.co.uk: DIY & Tools
Toggler Anchor Kit (Hollow Walls Without Studs) - GrabBars.com
SNAPTOGGLE | Heavy Duty Toggle Bolts | Heavy Duty Wall Anchors