Former world darts champion Mark Webster has been diagnosed with a rare form of blood cancer.

Webster, who claimed World Championship glory on the British Darts Organisation (BDO) circuit in 2008, has not worked at a darts event for Sky Sports since February and has this week revealed why during a wide-ranging interview on Darts World’s YouTube channel.

Welsh left-hander Webster discovered in January that he had a rare form of blood cancer called hairy cell leukaemia and has not worked since he started chemotherapy in February.

“It sounds bad when you say leukaemia, but…it’s got a good prognosis, 95 per cent of cases are successful.…