Security of Supply and the environment, these two issues would persuade any sane person to support nuclear power.
Unless this sane person was to point out that the UK has no indigenous uranium. If we have to import every gram of uranium from third parties, then by definition we do not have a secure supply. Especially since most of it has to come half way across the world. The countries we buy the stuff from, like Australia, may be friendly, but the open seas are not. If you compare the security of supply of a wind turbine or tidal generator with sailing radioactive muck across the oceans – the person who claims security for the latter looks to me like a fool.