Challenges facing the GB Electricity System and Governmental involvement

Hello,
A bit of a longer question and maybe a tad off topic from design.....but in the end...solving challenges will lead to design.
What are in your opinion the main challenges facing the GB electricity system over the next 5-10 years?Don't think only about technical challenges....if you have ideas about power markets, ancillary service markets as well as regulatory environment....please feel free to elaborate.Some answers would probably be: demand and generation profile changes, Brexit, political uncertainty, generation mix and high renewable penetrationWhat do you think the government should do to address these? What can the Scottish government do? ( Tricky question as the scots depend on Westminster but at the same time they want to be a world leader in renewable technologies)
Feel free to raise challenging and interesting points!Looking forward to your answers!

I will start the ball rolling RossI think the biggest problem associated with the future supply of electricity will be the move away from fossil fuel powered personal transport, now I fully support the reduction in the use of fossil fuels, but where will the generation of the electric power required for road transport come from.
I feel good as I have a 4KW solar array retrofitted on my house 1963 built, but its the only one in the road of south facing houses what a waste. New Houses backed by government money do not require the roof to be a solar generator so there goes another chance to boost the green power.I live on the Jurassic (Dorset) south coast and the visual environmentalists are blocking wind farm development out to sea, they use electricity do not want nuclear but it needs to come from renewable sources, get real environmentalists, the thousands of wind powered mills that used to dot the landscape you now wish to preserve. Wave power gets so little R&D money its a joke, but a poor one.Dyson and others are looking a battery and electrical storage problems and lets hope they come up with something better by a few hundred magnitudes of order than we have at the moment) Electric cars running on packs of AA cells hardly 21st century technology, I think our early Victorian electrical vehicle engineers would be disparaging about our advances in this area.Gas is used as an energy source and will run out, but the distribution system is well suited and before North Sea Gas delivered Hydrogen as a fuel ( coal gas), so it is possible that we will see electrolysis of water as a potential advantage with local compressors to store distributed output.So that rounds the circle where will the electric for electrolysis come from?I could go on for ages Ross get my address from Max and we can chat off line

My two cents - and this is a personal opinion, not an exhaustive analysis of the energy market, so apply appropriate weighting factors.We need to transition fast to a low-carbon energy system, which for reasons of energy density almost certainly means at least a partial dependence on nuclear power. But the public reaction to nuclear power is problematic. That comes in two parts, the cost and the perceived danger.The perceived danger is difficult to overcome, despite decades of safe operation and newer, safer reactor designs. I don't have a simple solution to that.
The cost problem is partly due to the scale of nuclear reactors. Each is so expensive that the government will not invest, but the cost of public-private partnerships will be even larger, long-term. This makes them economically unattractive. Plus the usual rule of PFI applies - privatize the profits, socialize the losses.
One possible way forward would be to tackle two problems at once: scrap the replacement for Trident, saving lots of money, and instead utilise the pool of engineering and nuclear expertise freed up at Faslane to develop, manufacture and deploy small modular reactors.Bingo, job done. Everyone home for tea and buns!Of course, this is overly simplistic and there's lots of devil in the details.
And I'm sorry to bring this up, as it's likely to cause arguments, but there's a very big and challenging elephant in the room... The entire political energy of the nation's rulers is currently swamped by Brexit, which means that any serious planning for energy policy (or anything else) is effectively on hold for at least the next 2 years while we negotiate what Brexit actually means, and most likely another 10 while we work out how to deal with the political and economic consequences.