Steve Plater is a former English motorcycle road racer. He was the 2009 British Supersport champion, and also finished as runner-up in the series twice in the late 1990s. In the British Superbike Championship he has 4 wins and 17 further podiums.

The Senior Tourist Trophy is a motorcycle road race that takes place during the Isle of Man TT festival, an annual event traditionally held over the last week in May and the first week in June. The Senior TT is the blue ribbon event of the festival that takes place on the Friday of race week, with "The Marquis de Mouzilly St. Mars trophy" awarded to the winner.