Do students need workshops on sexual consent?

Oxford and Cambridge introduced compulsory workshops for new students last year, and other universities are following suit.  I've just joined a discussion on BBC Radio Sheffield, which heard some alarming experiences from students who'd been groped, even raped.

Their stories are backed up by a series of studies by the National Union of Students which found that one in four students suffer unwelcome sexual advances. Meanwhile a report published in 2013 by the Ministry of Justice, the Home Office and the ONS said that female students are at higher risk of sexual violence than the general population.

A new worry for parents

It's worrying for parents left behind at home, coping with the uncomfortable notion that our job's done and from now on we have to let our kids make their own mistakes - a scary prospect.   It's hard not to think about all the conversations you should have had about sex, all those missed opportunities.

I suspect I'm not the only parent who has never had a conversation about sexual consent with any of my kids - my sons or daughter.  For us Brits it's difficult to talk about sex, but in this context it feels like a poor excuse.
Because  Freshers' Week seems a bit late for this discussion: surely consent should be part of sex education - at school and with parents - when kids are still at home.