It got me thinking as my DH would be considered WC on his own (manual work low salary, GCSE), whereas I come from a more middle class (parents went to uni, I have a master's). Our joint income is just above £100k. So my assumption is that as a family we're MC.
Joint interests are going on mini breaks, a bit outdoorsy (but no camping!), the arts, but we also like going to your average indie gig.