a significant increase in helicopter passengers and demand for business flights when/if the offshore renewable energy sector takes off in the Humber region
I wouldn't bank on it. There is a significant expansion in this industry off the Humber but it's not clear that they will use helicopters to any significant degree and if they do they're more likely to be EC135 size, carrying 1s and 2s for winching on to turbines. And these small helicopter maintenance activities have far less need of an airport than the current oil/gas flights, so may locate somewhere else entirely. At the same time the gas fields off the Humber are ageing and many will be closing in a few years. So the future for HUY is more likely to be - at best - replacing current offshore helicopter activity rather than expanding it.
On the positive side the future seems to be bright for employers who treat their UK workers like s**t so maybe Eastern will do well as an airport owner.
NS