The cost and time of cleaner sources is unrealistic

Sources such as wind or tidal are excellent, especially in the hands of the UK which has immense potential for utilising both renewable. However, as of now it is impossible to be completely reliant on them. To supplement the supply of energy and, more importantly, reduce reliance on France, nuclear fission would be a highly effective means of meeting needs until fusion, wind and tidal are developed to a point at which fission can be retired, particularly as the UK was a former world leader in nuclear power.