A quality bike lock is a necessary piece of kit, but how do you know which one is right? To check the security level of a bike lock for yourself, look at the Sold Secure Rating; you’ll find Gold-rated locks here. ‘D locks, sometimes known as ‘U’ locks, are a durable option that locks the frame to a non-moveable object. If you choose to use a D lock for the frame, you should use a cable lock to secure the wheels too. Cable locks are flexible and can come in different lengths. You’ll also find the commonly used chain locks and revolutionary Litelok bike locks here.