To divert attention from the broken glass, The Tavistock Society demonstrated its entire repertoire of trolley stunts on the central aisle. Pleasingly, it was wide enough to allow both 180° and 270° basket jiving. Less happily, problems with the handbrake (namely the absence thereof) resulted in a 6 cart pile up and overt damage to £24 worth of frozen merchandise. I think the manager had tears in his eyes as he bade us never to return.