That depends, with the emphasis on air travel being one of the main polluters that could mean that sea travel takes off again. If that is the case then the North East has a huge ship building heritage and its about time that those remaining yards were brought back to life again.
Or industries could be incentivezed to move to the UK and develop 'environemtnally friendly' technology. Hybrid cars are a reality now so why not have research and production here. Ah yes I know why, because if they take off then the government would be lynched soon afterwards as it would be clear there was no need to send troops to Iraq.