So it’s unsurprising that the CBI recently flagged up a lack of affordable housing as the biggest issue for businesses, with 63% putting it at the top of their list of concerns. There’s deep scepticism about Mayor Boris Johnson’s 42,000 homes-a-year target for the capital — three quarters say no chance — while, as we’ve seen, affordability is declining outside London. Travellers are willing to put up with a lot — rising fares, crowded trains and all the rest of it — but how long will it be before the housing squeeze starts forcing businesses away from the capital altogether when workers can’t even afford a berth in commuter-land? And, as the TUC points out, commuters tend to be better-paid, but it isn’t just the well-off suffering: lower-paid services workers are also travelling longer.