I work via agency so technically I can holiday whenever I want and for however long I want, though I don't get paid holidays (I get it in a small amount above my hourly rate)
I give myself 28 days a year off which seems to be the standard.
My last break was 4 days off in late Feb. Thinking that I'm going to take a 3 day holiday next week. Before Feb I had 3 days off last October and that was it.
Just interested to hear how others work.