Dan (rank) highest level that might be attained, with instructor certification and judge/judgment authorization being understood as higher-level or more sophisticated. Many arts use between one and ten dan ranks: In some martial arts, black belts are worn for all "dan" grades. In others, the highest grade (10th "dan") wears a red colored belt. In Jūdo and Shotokan 6th to 8th "dan" may wear a red and white-patterned belt and 9th to 10th "dan" may wear a solid red belt. There is some variation even within styles. Generally, belts do not have markings that indicate the actual "dan" grade. Okinawan styles used
British Judo Council is more rigidly adhered to than is often the case in more sport-oriented clubs and organisations. The BJC stress the importance of kata, a view that is not shared by some other large organisational bodies in the UK. British Judo Council The British Judo Council (BJC) is a membership organisation and a governing body for Judo in the United Kingdom. In 1955 Kenshiro Abbe, then a 7th dan Japanese judoka and the highest ranked judoka outside Japan, was invited to Britain on a two year contract to teach Judo at the London Judo Society, a Judo School in South London.