its part of a conservation collaboration between essex wildlife trust and the city of london corporation00s, and so maintaining these areas of heathland is really important and ensuring that we've got the variety of species. so, incorporating bell heather back into the heathland is improving that diversity. lots of problems on the tubes this morning to watch out for. we've got a part suspension on the district and hammersmith and city lines. theres also severe delays on the picadilly and metropolitamn lines and part closure on the 0vergronud. so do check before you travel! now onto the weather with kate kinsella. morning. it's a very cold and crisp start this morning. temperatures for some overnight down at minus three. so today, there are some icy stretches. the met office has a yellow weather warning in place for ice valid through to midday. now, it's going to be a dry day today. yesterday's rain, of course, is frozen. that's where we've got the ice this morning. widespread frost, but plenty of sunshine. north westerly breeze today will make things feel particularly cold between three