For the majority of on-street charge points, you will require a type 2 (62196-2) menekes cable to successfully charge. These are available in 16 or 32 amps, depending on your vehicles charging capability
There are still on-street units that utilise the domestic 3-pin plug, but most drivers will have both types of cable available to them, just in case.
50 and 43 kW Rapid charge units have tethered cables, but not all vehicles can utilise these chargers. The UK Electric Vehicle Supply Equipment Association can help you determine which equipment you car can use, or check with your dealer.