Union Minister Sukhdev Singh Dhindsa, who leaves for London tomorrow, said today he would urge British authorities to chalk out a joint plan to combat organ sales after a sting operation in the UK linked them to Punjab.‘‘Procuring organs from live donors has to be dealt with sternly. I am leaving for London tomorrow and will urge British authorities to chalk out a plan to combat trade in human organs,’’ Dhindsa, also secretary of the SAD, said.A British doctor, B.S. Makkar, was on Friday found to have acted unprofessionally in connection with procurement of organs from donors living in poverty in India.In another case, a British Sikh patient died during a kidney transplant in Jalandhar, news reports said.The reported death of 69-year-old Darshan Sandhu, a resident of Coventry in the Midlands, at a hospital in Jalandhar will figure in hearings involving a second doctor before the GMC in October.