Latest: England (109-1) need 212 more runs to win.
BAD LIGHT STOPS PLAY.
The first Test is set for a draw as bad light stopped play for a second time in the final session of the match.
With 25 overs left, England still need 212 runs to win while South Africa need nine wickets for victory.
The tourists declared on 134-4 less than an hour after lunch on the final day of the first Test after Graeme Smith added a rapid 85 to his record-breaking 277 in the first innings. He took 19 scintillating runs off one James Anderson over.
Earlier, Ashley Giles hit 21 runs off his first nine balls in the morning as the home side avoided the follow-on in some style.
All the action (all times BST):
BAD LIGHT STOPPED PLAY.
1724 Peterson tosses a ball up in the air and Hussain spanks it through cover for four. There are now three lights on and England accept the umpires' invitation to leave the field.
1721 Pretorius bowls a maiden to Hussain. There are two lights on on the scoreboard.
1716 Hussain misjudges a Peterson delivery, deciding to leave it, only to see it miss his off-stump by a fraction.
1712 Trescothick nicks a Pretorius ball to first slip but Pollack fumbles what should have been a straightforward catch.
1711 A classic Hussain cut reaches the boundary for the first runs since play resumed.
1705 Play resumes after a short stoppage for bad light.
1639 The umpires offer the light to the England batsmen. who take it and play comes to a halt.
1636 England's 100 comes up with a Trescothick boundary off Peterson.
1633 Pretorius bowls a huge bouncer which clears Boucher and goes for four byes.
1630 The umpires have a conflab, possibly about the light, but play continues.
1625 Hussain unleashes a flamboyant square-cut, cracking the ball for four off Pretorius.
1623 Hussain has a let-off when he edges Peterson but it is a hard chance for Boucher and the opportunity goes begging.
1622 Trescothick nicks a single to bring up his 17th 50 in Test cricket after 99 minutes at the creas.
1620 An expensive over from Pretorius as four leg byes are followed by two boundaries from Hussain, the first through mid-wicket while the second is a drive off his back foot through extra cover.
1615 Peterson finishes off his over after the tea-break and allows Nasser Hussain, who has surprisingly come in at three, to get off the mark, edging for a single. Trescothick square-cuts for four off the last ball.
1554 Peterson tempts Vaughan to drive and he nicks the ball to first slip where Pollock makes a sharp catch at ankle height. The players go off for tea.
England 72-1 (Vaughan 22)
1552 Pretorius sneaks in a fast ball which finds its way past Trescothick's outside edge but the next ball is cut away for four.
1545 After leaking runs in his previous over, Peterson allows just one off this over, taken when Vaughan drives to mid-off.
1531: The game is entering a quiet period with some unthreatening stuff from Pretorius being served up and the draw is becoming virtually inevitable.
1521: In a good over for England, 11 runs come off a Peterson over, including a four for Trescothick using his feet to good effect.
1515: Trescothick gets lucky as he narrowly avoids playing on to Peterson.
1510: Trescothick pulls Pollock for two runs.
1506: Peterson replaces Ntini and immediately gets plenty of turn and bounce.
1500: Vaughan hits only his second scoring shot of the day by pulling Ntini for six and then driving the same bowler for four more.
1455: Pollock keeps England in check by bowling a maiden at Vaughan.
1450: Trescothick repeats the shot that brought him his first four and again collects a boundary off Ntini. A third version of the shot flies away for four more before the Somerset man pulls and drives two more boundaries - 20 runs off the over.
1440: England's first four comes up in the fourth over with Trescothick cutting Ntini down to third man.
1412: Rudolph (8) is well stumped by Stewart off Giles and Dippenaar ends on 28 not out as the declaration comes at 134-4.
1405: Dippenaar smashes two boundaries off Giles and the momentum is continued - surely the declaration will come soon.
1400: Giles bowls Smith through the gate and the South African skipper is finally out for 85 blistering runs off 70 balls.
South Africa 114-3 (Smith 85)
1356: Flintoff's first ball is pummelled by Smith to mid-wicket for four as the South African skipper eyes a second century in the match. Later in the over, Smith drills him over mid-on for six.
1347: Smith smacks Anderson for three consecutive boundaries, all with orthodox shots and edges a fourth in the same over.
1341: Dippenaar is finding it much harder than Smith to hit quick runs.
1337: Smith uses his feet to hit Giles over wide mid-on for a big six. The following ball, the South African skipper gets the single needed for his fifty.
1327: England are convinced Dippenaar has edged Giles to the wicket-keeper, but umpire Venkat is unmoved.
1246: A tight over from Anderson sees South Africa go to lunch at 55-2.
1239: Smith goes down the pitch to Giles and is beaten but Stewart cannot collect to attempt a stumping.
1234: Anderson switches ends, replacing Harmison. Smith flicks a single on the off side to bring up the South Africa 50 in the 13th over.
1230: England make the first bowling change of the innings, introducing spinner Ashley Giles for two overs before lunch.
1227: Smith pulls three successive deliveries from Harmison for four.
1220: Harmison bowls a brutal ball to Kirsten which the batsman can only balloon to square leg.
South Africa 32-2 (Kirsten 1)
1211: Anderson takes his first wicket of the match as Gibbs is bowled off his elbow by an excellent fast ball jagging back at his body.
South Africa 30-1 (Gibbs 9)
1209: There is some serious problem with the three drainage channels which are hampering Anderson's run-up.
1203: Smith square drives an Anderson half-volley for four.
1155: Harmison and Anderson are both settling quite well now.
1147: Anderson's first over is much better and Gibbs is a trifle fortunate to survive it.
1140: Smith enjoys a fast start, collecting 10 runs off the first over bowled by Harmison.
1134: South Africa captain Smith calls for the heavy roller before preparing to open the second innings with Gibbs.
1130: A perfect yorker from Pollock ends Giles's resistance, and with it the England innings.
England 408 all out (Giles 41)
1126: Backing away to leg, Giles flails Ntini over the slips for four welcome runs.
1121: Giles hits Pollock through mid-off for a pleasant boundary and Anderson somehow sees out the remainder of the over.
1117: Harmison is beaten all ends up by the second Ntini ball he faces and is clean bowled.
England 398-9 (Gough 0)
1115: Ntini strikes as an attempted pull by Gough goes straight up in the air and square leg takes an easy catch.
England 398-8 (Gough 1)
1110: Gough scores his first Test run in almost two years with a scrambled single off Pollock.
1059: South Africa suffer futher frustration as Ntini bowls a maiden to Gough.
1053: Pretorius continues and his first ball is driven straight down the ground for four more to Giles. A half-volley is then dispatched to point and the follow-on is averted.
1050: Giles cracks two shortish balls from Ntini off the back foot foot through the covers for four, and gets another down to third man for a third boundary.
1045: The first ball of the morning, from Pretorius to Gough, swings in late and almost hits the base of off stump.
England: Marcus Trescothick, Michael Vaughan, Mark Butcher,
Nasser Hussain (captain), Alec Stewart, Anthony McGrath, Andrew
Flintoff, Ashley Giles, Darren Gough, James Anderson, Steve
South Africa: Graeme Smith (captain), Herschelle Gibbs, Gary
Kirsten, Jacques Rudolph, Boeta Dippenaar, Mark Boucher, Shaun
Pollock, Robin Peterson, Dewald Pretorius, Charl Willoughby,