build a wall twice from lands end tojohn 0'groats. saying, build a wall twice from land's end to john o'groats river, thank you very much. thank you for having me. hello once again. it has been a busy speu hello once again. it has been a busy spell of weather across the british isles and today was no exception. another day of mixed fortunes. here in the heart of london, beautifully ca ptu red in the heart of london, beautifully captured as ever by tim ——. four celsius, the warmest day of the year so far. it wasn't like that every word. you probably have a wet day. that frontal system which gave all be cloud and rain is quite important. to the west the is cooler, to the east air is milder. london certainly got into that milder air. that front overnight will take its heaviest rain towards areas of the great glen, up towards the northern isles, and you can almostjoin the dots back towards the south—west. rain is already gathering. we are very much underneath the influence of the jetstrea m. underneath the influence of the jetstream. you can see that low pressure in that big kink towards the conti