 Dominos Pizza Group PLC increased its market share in the third quarter, announced plans for a new 20mln buy-back together with a full roll-out of Just Eat after a successful trial. In a third quarter trading statement the group reported its share of the UK takeaway market rose to 7.2 in quarter three from 6.4 last year with like-for-like system sales up 2.4 during the period. 