In-Play Betting is one of the truly great innovations of online gaming, and allows you to bet on markets as they run. Say you suddenly see some tension in a defensive back line up, or think a boxer is fast running out of steam, in-play markets allow you to bet on results while the event is already ‘in-play’, letting you follow your instincts much more closely than you could with just the information available before a match starts.
In Running Punting
In-Play markets typically run on a slight delay to stop people gaining an advantage due to TV delays or other timing problems, but for most purposes are effectively running live, and are a fast and furious world where fortunes can turn on a knife edge. Every little detail of an event can be analysed and bet on in real time, and they provide one of the most exciting and intense betting experiences available.

Fontwell Races. National Hunt is a popular inplay betting medium

Bet365
Betclic
BetVictor
Bwin
Ladbrokes
Paddy Power
SkyBet
Sportingbet
Stan James
Unibet
William Hill
Pinnacle