England 1-29 v S Africa 309 - lunch

South Africa stuttered at the start but finished 7-262 at stumps in the third Test against England. (AAP)

South Africa stuttered at the start but finished 7-262 at stumps in the third Test against England. (AAP)

South Africa, resuming at 7-262, were all out for 309 on the second morning of the third cricket Test at Lord's, with England 1-29 in reply at lunch.

South Africa completed a good morning's work when Morne Morkel bowled England captain Andrew Strauss off the last ball before lunch on the second day of the third Test at Lord's on Friday.

Strauss, playing his 100th Test and 50th as skipper, was clean bowled between bat and pad on his Middlesex home ground by fast bowler Morkel to leave England 1-29 in reply to South Africa's first innings 309.

Alastair Cook was six not out.

Earlier, Vernon Philander's (61) maiden Test fifty helped South Africa further frustrate England with the bat.

The tourists collapsed to 4-54 after winning the toss on Thursday's first day but, by stumps, had rallied to 7-262 thanks to several useful efforts by their lower order.

Philander's 61, the joint top score along with that of JP Duminy, then saw South Africa past the benchmark total of 300.

It was nowhere near the 2-637 declared they made in their innings victory in the first Test across London at The Oval but far more than looked likely when Middlesex fast bowler Steven Finn was running through their top order on Thursday.

Finn finished with figures of four for 75 from 18 overs.

South Africa resumed Friday with No.8 Philander 46 not out and Dale Steyn 21 not out.

However, Steyn added just five more runs to his overnight score before edging Stuart Broad to Graeme Swann at second slip.

Philander, though, completed a 75-ball fifty, including five fours, having already surpassed his previous Test best of 29 against New Zealand at Wellington in March.

Morkel, having made 25 and helped Philander add 37 for the ninth wicket, was out when he nicked a wide delivery from Finn and wicket-keeper Matt Prior, diving to his left, held a low, one-handed catch.

Philander's more than three hours of resistance ended when he was last man out, stumped slogging at off-spinner Swann to give Prior his sixth dismissal of the innings.

The tourists, 1-0 up in this three-match series, need only to avoid defeat to replace England at the top of the world Test rankings.