Nuclear developers have big plans for pint-sized power plants in UK

* Large plant costs led developers to look at smaller versions * First deployment in UK possible by late 2020s * Critics say no guarantee SMRs will be cheaper, viable * Graphic -UK nuclear sites - http://tmsnrt.rs/2b4T144 By Susanna Twidale LONDON, Aug 18 (Reuters) - A range of mini-nuclear power plants could help solve Britain's looming power crunch, rather than the $24 billion Hinkley project snarled up in delays, companies developing the technology say. So-called smal