What do you think the weirdest London IPO of the year could be? Take a moment to think about it.

And now, let me tell you why you’re wrong. I have the answer.

It’s a firm called Hybrid Air Vehicles, a company that makes airships.

Yes, airships. If you thought – as I did – this technology died in the 1930s, you thought wrong. It could be making a big comeback.

Hybrid Air Vehicles says it plans to scale its operations to make up to two dozen airships a year by 2030. In accounts filed a few weeks ago, the Bedford-based business boasted a pipeline of as much as $2bn in reserved orders.

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