Crossrail is four years late, £4bn over budget and, despite the fanfare around its part-opening last month, it is not yet fully operational. But the owners of Canary Wharf aren’t bothered by these mere hiccups.

So important is the Elizabeth Line to the future of the embattled business district that to celebrate its arrival, they lit up the estate’s skyscrapers, bridges and even park benches in purple — the line’s signature colour.