now, we'd like to introduce you to the oldest employee working for thameslink. 82—year—old siggy cragwell has been working on the railways since he arrived from barbados in 1962. he says he has no plans to retire. some people say you must be mad to do all this. i say, no, i'm quite happy. i'm not mad. well, you love it, and you've done so many differentjobs in the railway, haven't you? yes. back to when there were steam trains running along here. that's right. i love the rail, and and there's a lot of great people in the rail. let's take a look at the situation on the tubes this morning. the dlr is part suspended. there's also the ongoing part closure of the northern line. and the overground is also has a part closed. onto the weather now with kate kinsella good morning. a frost free start this morning, but the temperature is set to get colder. you can see the blue, the colder airjust edging in from the north through today. we start off on a cloudy note.