Since 2021, what is the normal route to unrestricted category A for most riders who obtained A 35 kW after 1 January 2021?

1. Hold A 35 kW for two years with a clean record, then obtain a learner licence and pass the practical test
2. Turn 25 and receive unrestricted A automatically
3. Pass only a written test with no riding assessment
4. Hold category B for one year and exchange it directly