The River Thames is not as safe as it might seem at first. Many paddlers do not realize that it is, in fact, a tidal river. In addition to changing water levels, the waves produced by passing boats can make it even more challenging. The stretch that flows in central London appears to be the most precarious. However, the excitement from paddling and the nice urban landscapes are worth it. You can go canoeing and kayaking, preferably with a group. There are still some great options for less skilled paddlers. The Brentford Lock is renowned for its much calmer waters. In addition to regular sessions, there are overnight trips and also whitewater playspots available to the most daring sportsmen. The season runs from March to October.