All these rules started 1st January 2012 but not to be applied until 6 April 2012. Your steering lock is now testable. Led lights use the 50% rule so if half light when swiched on they pass. This does not count for number plate lamps with multiple bulbs as they all have to work. It was Porch that had a word with the HID law and won. So now some sports cars dont need self leveling head lamps. Brake force percentages have been raised on later vehicles. Vosa are still looking into the 4,2,2 rule for mots. First mot after 4 years then every 2 years until 10 years old wich is then every year as now.