From the outside, the Humber Refinery does not look like a part of Britain's green future - and that's putting it mildly.

This is the very image of the country's fossil fuel industry, a mammoth plant that churns out petrol, aviation fuel and other such products. It is a spaghetti junction of pipes - thousands of miles of shiny steel tubes snaking from canister to tank and back again.

But it will also feature aspects we might be a little less comfortable with: digging vast quantities of stuff out of the ground, racing to secure resources before other countries do; and relying on oil refineries like this, both in the short term and potentially the long term too.