WHO would have thought that a seat on a Glasgow tram would, in retrospect, be a foretaste of a more famous posed picture at the Taj Mahal? This photograph from our archive is of Princess Diana looking introspective, even a little lost, while on a visit to the Glasgow Garden Festival in 1988 when the royal couple were taken aboard a vintage tram running along the festival site at the Clyde. Husband Charles is ignoring her, looking out the window, and even Scottish Secretary Malcolm Rifkind, a natural raconteur, seems at a loss for words.

We were not to know that the royal marriage was already under strain, and that four years later Princess Diana would strike a similar lonely pose at the Taj Mahal which vividly revealed to the public the parlous state of their relationship.

Or maybe she just did not like the shoogle of the trams, and we're reading far too much into it.