ID cards might make it easier to track down perpetrators but it won't help prevent these isolated attacks.That's news to me...... Role out id cards for all
You need military roadblocks at 3KM intervals on all main routes, you need random stop and searches by armed police and a complete countrywide cerfew from 8pm to 8am. Some other things that might help would be to take down all open wi-fi and make internet access by licensed users only, also firewall the internet at national level so only acceptable sites and services that are UK government run are available. Also encourage a system where neighbours and family members spy on each other and report to a secret police force for cash rewards. Yeah, it might cramp your style whilst you're getting used to it but it's for your own good