There's only really 4 options
1) the police do it
2) dedicated 'truant officers' do it
3) social services do it
4) noone does it
Of the 3 that actually achieves anything, I suspect the police doing it is likely to be the least power-trippy, dedicated truant officers would just be too expensive, and social services are also run thread-bare by the tories to the point where they'd not really have time for it either.