London: Alastair Cook came through two reviewed appeals as England strengthened their grip on the first Test against a depleted South Africa attack at Lord's on Saturday.
England were 119 for 1 in their second innings at stumps on the third day -- an overall lead of 216 runs.
Cook, in his first Test since resigning as captain in February, was 59 not out and fellow left-handed Gary Ballance 22 not out while Keaton Jennings caught behind on 33.
Vernon Philander had yet to bowl in the innings after going for an X-ray on a hand injury suffered when he was struck by James Anderson while making 52 in South Africa's first innings 361 earlier on Saturday.
It was a worrying absence for the Proteas, who will definitely be without another member of their pace attack for next week's second Test at Trent Bridge after Kagiso Rabada was banned from that match, as a result of a 'totting-up' punishment under the ICC code of conduct for verbally abusing England all-rounder Ben Stokes on Thursday's first day at Lord's.
Cook had made just one when given not out by umpire Paul Reiffel in response to Morne Morkel's lbw appeal.
South Africa, with Dean Elgar captaining the side in the asbence of Faf du Plessis on paternity leave, reviewed.
But replays confirmed the ball had pitched outside leg stump -- something that seemed clear with the naked eve given Morkel was bowling from over the wicket to the left-handed Cook -- and former Australia seamer Reiffel's decision was upheld.
Cook had moved on to 12 when a delivery from left-arm spinner Keshav Maharaj turned sharply into his pads.
South Africa reviewed again but, with replays showing the ball had struck Cook outside the line of off-stump when he was trying to play a shot, Indian umpire S Ravi's decision was upheld on this occasion.
Earlier, South Africa resumed on 214 for five -- still 244 runs behind an England total.
Temba Bavuma was 48 not out and nightwatchman Kagiso Rabada unbeaten on nine, with sunny blue skies promising good batting conditions.
Bavuma completed his fifty when he square-drove Stokes for four.
England, fielding two spinners in a Lord's Test for the first time since 1993, then saw both their slow bowlers take wickets.
Hampshire left-armer Liam Dawson, on his home debut, made the breakthrough with just his second ball Saturday when Rabada (27) edged to wicket-keeper Jonny Bairstow.
Off-spinner Ali, who on Thursday completed both halves of the Test all-rounder's double of 2,000 runs and 100 wickets, had Bavuma (59) taken at slip by Stokes via Bairstow's thigh.
Root entrusted the new ball to the veteran duo of James Anderson and Broad.
But wicket-keeper Quinton de Kock twice struck Broad for three fours in as many balls -- the best a whipped drive through mid-on from a ball pitching outside off stump.
It was a typically dashing display by the left-hander, who completed the second-fastest Test fifty at Lord's in a mere 36 balls, including 10 boundaries.
But his next ball proved his last, de Kock slicing Anderson to square cover where Stokes took an excellent low catch.
Philander made an 80-ball fifty before he was last man out slogging at Ali, who finished with impressive figures of four for 59 in 20 overs.
England - 458 (Root 190, Morkel 4-115) and 119 for 1 (Cook 59*)
South Africa - 361 (Bavuma 59, Moeen 4-59)
Status - England lead by 216 runs