time to get the news where you are. good morning from bbc london. passengers are being warned of further disruption to train services as thousands of rail workers go on strike from tomorrow. members of the rmt will walk out from december the 24th to the 27th as part of their dispute over pay, jobs and conditions. some services won t be running at all and those services that are running on christmas eve will be finishing much earlier with some trains leaving their points of origin as early as mid day. so my advice to passengers looking to travel is checked now on the train operator s website whether your train is running and check again before you set off. it is thought less than half of young londoners are doing the recommended levels of physical activity. according to a report by the charity london sport, 5 16 year olds across the capital are lagging behind the rest of the nation, with over 600,000 not getting enough exercise