Can I start on the tidal?
As I mentioned, it's a combination, it's not just one solution. It has to be a coordinated set of programs based on a partnership with industry, and industry-led, with key support from government and universities sometimes. John talked about the feed-in tariff, and that's critical for any developing technology. It applies just as much to tidal and wave energy as it does to solar panels or anything else.
I mentioned the regulatory regime, and I think this may be more unique to ocean renewable energy. We often overlook that. It's critical. There are roadblocks in the way. It's not always just investment that's required. Sometimes we can't get our technology out there in the ocean because of the cumbersome regulatory regime, and I'm convinced a lot of that is because the departments in government that I mentioned need more funding. They need to respond better by having better science. They've been pressed for funds on that.
I'll leave it at that, given that time is short.