In the 1980s the first wave of revolutionary content delivery saw the development of Ultravision, Trivision and similar panels with three rotating faces designed to maximise sales revenue. Media buyers supported the product and there was a rapid expansion in the number of panels that became available which, in turn, undermined the individual unit value.

High servicing and maintenance costs and the superiority of lightboxes has meant that these units have a very limited lifespan, if not replaced already with lightboxes or digital panels.

Those which are not capable of conversion will either revert to a 'paper & paste' panel or be culled.

Mechanical Hoarding Sizes and Population

Type Size Number in UK
48 Sheet Ultravision 3.1m x 6.2m n/a
96 Sheet Ultravision 3.1m x 12.4m 4,500