We should worry about what is happening to London. Our capital is, after all, the country’s economic powerhouse. It accounts for just under a quarter of Britain’s GDP. In fact, three of its now most deserted locations — the City, the West End and Canary Wharf — account collectively for an eighth of the nation’s output. There is a danger that short-term damage to London’s economy could become permanent unless the right steps are taken.

As a boy, Douglas Ross, the new leader of the Scottish Conservative and Unionist party, had two interests: cows and football. Growing up on a dairy farm in Moray, he never aspired to hold political office. He enjoyed the solitude of early morning milking. ‘Some people like big tractors, other people like sheep. I was just really interested in dairy cattle, and Holsteins in particular,’ he explained earlier this year. Now he finds himself faced with one of the more daunting tasks in British politics: thwarting Nicola Sturgeon and, in the process, preserving the United Kingdom of Great Britain and Northern Ireland.

Dear Prime Minister, You already have quite enough on your plate. So forgive me if I hoist a storm cone over another potential problem. I refer to the US presidential election on 3 November and the possibility of its ending in deadlock and confusion. I was the British ambassador to Washington during the Bush/Gore election of 2000. The outcome hung in suspense for a month. Everything turned on which contestant had won more votes in Florida.

Rather like unpacking after a holiday, when you take unworn clothes from the case still neatly folded because the occasion to wear them didn’t arise, unshown film sequences from my travel programmes are carefully edited and stored. The cancellation of this year’s long trip along the Spice Route made us look at these stories again; with not much prompting we have made three whole programmes from them. In the few years since we made these series the world has changed.