end takes joanna konta into the next round at wimbledon. and coming up on bbc news. we ll have all the latest from a big day for the british players at the all england club. join me for wimbledon sportsday at 6:30. good evening and welcome to the bbc news at six. knife crime is now one of the greatest challenges facing police forces across the country. in fact, the knife is britain s number one murder weapon. the figures are all the more shocking because increasingly both victims and perpetrators are young children and teenagers. last year nearly 32,500 knife crimes were committed in england and wales. that figure was up 14% on the previous year. senior police officers say there needs to be a change in attitudes and behaviour. our home affairs correspondent, june kelly, has been on police patrol in birmingham and met some of those working to end knife culture. a summer evening in birmingham and the force response teams from west midlands police are dealing with dozens of em