::::::::: REUTERS - UK NEWS :::::::::                    MPs launch inquiry into cryptocurrencies          UK improves offer to return devolved powers after Brexit, Scotland wants more          EU guidelines on future British relations due in March, with or without London's input          Sinn Fein leader says UK does not have plan for restoring Northern Ireland's government          Queen Elizabeth makes surprise appearance at London fashion catwalk          Britain urges EU to work jointly on Brexit deal, won't undercut rivals          Charity Save the Children apologises for inappropriate behaviour by ex-CEO          Brexit customs deal may still lead to Irish border checks - minister          Britain's farmers union elects first female president          Growth comes at a cost for UK's Metro Bank