OK, fine, that last bit was guesswork. It is impossible to know what goes on in the households of heads of state.

It may be that Prince Philip, aka the Queen’s other half, aka Phil the Greek, hides spoons in guests’ luggage for his own sport.

Still, now that Britain is desperate to become “China’s best partner in the West” – as the country’s Finance Minister George Osbourne put it in Beijing the other week – the parameters for any meaningful exchanges not involving the (proverbial) hoisting up of British skirts when Xi Jinping touches down in London later this month have narrowed.

In any event, here are just a few of the possible turns unlikely to be taken by events after plain-speaking Phil, 94, has broken the ice with a joke or two about the Japanese and fallen sleep.

1. David Cameron, the British Prime Minister, will insist that in return for a) welcoming Chinese involvement in new UK nuclear power plants, b) turning a deaf ear to American concerns about the security implications thereof, c) jumping on board with the Beijing-led Asia Infrastructure Investment Bank, and, above all, d) investing £700,000 (HK$8.2 million) to assist Chinese citizens who may wish to go on holiday to places in the north of England, British ministers do not in future expect to incur the Chinese state’s diplomatic wrath for talking to harmless old men from Tibet.
2. Mindful of the Chinese love of pork, Mr Cameron will then seek Mr Xi’s advice on how to handle those who write and publish materials alleging Prime Ministerial misadventures involving dead pigs. And how to stamp out seditious communications in general.
3. Mr Xi will thank the Prime Minister for dancing so nimbly to China’s tune but remind him, portentously, that always someone must pay the piper. The Queen’s bagpiper will nod sagely. China’s paramount leader will then thank his hosts for knowing when to “shut up about all that human rights crap, not like the Americans”, adding that Mr Osborne is a man of high principle who is respected throughout China and the world and that the two countries are now best friends forever. He will also promise to keep throwing chickenfeed at the minister’s pet projects and that the £700,000 will not be spent by officials on a night out in Macau.
4. Onto his second whiskey sour, Mr Xi’s charm offensive will continue with an apology to Britain’s Foreign Affairs Select Committee, whose members were barred from entering Hong Kong earlier this year. He will blame the unfortunate episode on an administrative cock-up, praise Britain for giving the world parliamentary democracy and vouch that his administration approves of universal suffrage – for voting out contestants on Chinese Idol.
5. The Queen will ask after the well-being of Zhou Yongkang and observe that by contrast to the unfortunate former Minister of Public Security’s grizzled rug, Mr Xi’s own hair seems vibrant for a man of his years. She will then ask the President if he would like to pet one of her corgis.
6. Jeremy Corbyn, the new hard-left leader of Her Majesty’s Opposition, will attempt to engage Mr Xi in a discussion of Lenin’s 1904 pamphlet One Step Forward, Two Steps Back, and about the timetable for achieving socialism on earth.
7. Charles will announce “sod it, I never wanted to be a constitutional monarch anyway”, harangue Mr Cameron for being a pushover, and for doing so little on behalf of the endangered Patagonian Toothfish, let rip on China for being ghastly and appalling, and then finally settle in to some light Buddhist chanting, the noise from which will waken Phil the Greek from his slumbers.