Sir Keir Starmer said tackling knife crime requires a 'laser focus' as he described the double stabbing as 'devastating'.
Speaking during a visit to Warrington, the Labour leader told broadcasters: 'My reaction to what happened in Bristol starts with the human reaction. This is devastating for the family and friends of these two youngsters. I have teenage children myself. I cannot even imagine what it's like for the family and friends.
'But broader than that, I think across the country, there is this general concern now that knife crime is getting out of control. We've seen a 77 per cent increase since 2015. We've got to take it more seriously. 'We need real ambition by the Government. Make sure these knives are not available online - that can be done very quickly.
We don't even know yet where these particular murderers got their knives. Despite arrests, police weren't even naming the suspects at the time I drafted this. So why does he think making knives unavailable online is going to help?
'Where we think that youngsters are getting into trouble, put the support and get them out of that situation in the first place. And then finally, make it absolutely clear that if you carry a knife you carry the consequences.
'So I would bring a laser focus to this now. We can't carry on with these awful stories of knife crime. We have to roll up our sleeves and do something about it.'Well, you were DPP in 2008 and held that position until 2013. If anyone laid the foundations for this rise, it was you.