Another common form of arthritis RA is an autoimmune disease. It happens when your body's immune system attacks body tissue. These attacks affect the synovial tissue in the joints, a fluid that nourishes the cartilage and lubricates the joints. British Glass is organising a one-day seminar on funding for decarbonisation and energy efficiency work on Thursday 2 November (north of England, venue TBC) – which will be attended by British Glass members’ and non-members.