Season (television)
British shows have tended toward shorter series in recent years. For example, the first series of the science fiction programme Doctor Who in 1963 had forty-two 25‑minute episodes. It had a similar number each year until it was reduced to twenty-five for 1970. This was done because of changes in production. It also reduced the actors' workload.  The revival of Doctor Who from 2005 has had thirteen 45‑minute episodes. There are some series in the United Kingdom that have a larger number of episodes. For example Waterloo Road started with 8 to 12 episodes. From series three onward, it increased to twenty episodes. Series seven will contain 30 episodes.