Surely there are electricians with experience in mining that you should find and ask for their help. Especially in the UK, I am sure it is very easy to find a good specialist to help you install electricity. I don't recommend you do it yourself. I once tried to install electricity on my own, but it wasn't the best ending. So I turned to the specialists at https://www.propointelectrical.com.au/serviced-areas/bayside/, and they fixed my problems quickly and qualitatively. I recommend you take the same steps.