MATCH SUMMARY (STUMPS, DAY 1):
Australia 190 v England 92-7
Glenn McGrath produced a superb spell of seam bowling, taking 5-21 as England made a poor reply to Australia's 190 all out on day one of the Ashes series.
They finished the day on 92-7, still 98 behind after Brett Lee removed Ashley Giles with the last ball of the day, leaving Kevin Pietersen 28 not out.
Steve Harmison (5-43) had earlier excelled as the Aussies batted first.
But McGrath then destroyed England's upper order in a spell just after tea that changed the match completely.
KEY MOMENTS OF THE THIRD SESSION:
1804: WICKET 92-7 (Giles 11)
Lee peppers Giles with short balls before striking with the last ball of the day as the number eight steps back on his stumps after edging behind down the leg-side.
1754: Giles defends another rapid Lee short ball into Katich's hands at short-leg, but he is repreived as the bowler no-balls. Giles then walks across his stumps and on-drives for four.
1750: WICKET England 79-6 (Jones 30)
Jones can do no more than deflect Lee's brute of a short ball into the gloves of Gilchrist as Australia strike again. The stand of 58 runs is the day's best.
1746: Warne replaces Gillespie with Pietersen taking face. He appeals for lbw first ball but the half-hearted shout is turned down. Warne starts with a maiden.
Ian Baksh from the UK has e-mailed our Ashes blog to say "you have to put your hands up and say that McGrath has probably just bowled the best spell for 25 years. You can't blame batsmen when you're up against that kind of bowling".
1739: Lee's reverse-swinging yorker is barely kept out by Jones as Warne warms up in the field.
1736: Pietersen feasts on Gillespie, caressing him through mid-wicket before clubbing over mid-on for successive boundaries.
1724: Pietersen belts Lee through the covers for four, and Jones repeats the dose with an attractive drive.
1717: Gillespie beats Jones with an almost unplayable leg-cutter but the batsman retorts with a luscious four through the covers. The 50 is up for England.
1640: A poor ball from Gillespie sits up and is crashed by Pietersen through extra cover for four - a brutal shot from the debutant.
1619: WICKET England 21-5 (Flintoff 0)
England are positively reeling now as McGrath clean bowls Flintoff with one that keeps very low. The paceman picks up his 27th five-wicket haul in Tests.
Simon from Scotland has e-mailed our Ashes blog to say "I bet the whole of the England selection committee are wishing they had picked a certain Graham Thorpe right now!"
1614: WICKET England 19-4 (Bell 6)
It is that man McGrath again and England are four down as Bell's leg-stump is rattled off an inside edge.
1603: WICKET England 18-3 (Vaughan 3)
McGrath strikes again as Vaughan is clean bowled by a delivery that keeps a little low. The spring returns to Australia's step.
1601: Bell gets out of the way of a Lee short ball before slapping a half-volley through extra cover for four.
1558: McGrath continues to tempt Vaughan outside the off-stump. The England skipper searches for one and misses by a coat of varnish.
1538: WICKET England 11-2 (Strauss 2)
McGrath makes it 501 - aptly it is Strauss (Levis - get it?) - as the left-hander edges low down to Warne at first slip.
McGrath ends a superb over by beating Bell's defences, the ball just missing off-stump.
1533: WICKET England 10-1 (Trescothick 4)
McGrath picks up his 500th wicket in Test cricket - the fourth man to do so - as Trescothick directs a leading edge into the hands of Langer at third slip.
KEY MOMENTS OF THE SECOND SESSION:
1457: Lee bowls his first Test delivery for 18 months, a loosener which Strauss leaves alone. A brutal short ball hits Strauss on the shoulder and flies over the keeper for four leg-byes.
1451: McGrath, one wicket away from 500 Test scalps, tries to tempt Trescothick outside the off-stump. England's reply is under way as the left-hander edges through gully for four.
1439: WICKET 190 all out (Gillespie 1)
Australia's first innings is all over inside 41 overs as Harmison traps Gillespie lbw to claim his sixth five-wicket haul in Test cricket.
1437: Flintoff digs one in short to McGrath, who ducks safely under before edging over the slip cordon for four. Another bouncer cramps up the tailender and strikes him on the chin.
1432: McGrath dispatches Harmison to the mid-wicket fence. You don't read that often.
1428: MISS: Lee cuts Harmison straight to Pietersen, who spills another chance at gully.
WICKET Australia 178-9 (Lee 3)
Lee does not last for long as he gloves Harmison to Jones behind the stumps. The end is nigh for Australia.
WICKET Australia 178-8 (Katich 27)
Katich plays a rash hook shot and skies a top edge into the gloves of Jones. The tail is now there for England's taking.
1416: WICKET Australia 175-7 (Warne 28)
Warne perishes to the first ball after drinks as he walks across his stumps and is bowled leg-stump by a pumped-up Harmison. The seventh-wicket stand of 49 is terminated before it gets out of hand.
1355: Harmison returns to the attack at Flintoff's expense. Warne fends a short ball to gully, where Strauss leaps and tries to pull off a one-handed catch but fails.
On the Test Match Special radio commentary, Aussie broadcaster Jim Maxwell says "you'll get giddy watching this! This is two teams who have stored up a lot of emotion for so long".
1353: Warne is far out of his crease as Vaughan's shy misses the stumps and almost cleans up the batsman, who collapses to the ground in trying to evade the ball. Warne clobbers the next ball for four backward of square.
1350: More meaty strokeplay from Warne, who clubs Jones over cover for another four runs.
1333: WICKET Australia 126-6 (Gilchrist 26)
Gilchrist sends Flintoff high over gully for four before trying the shot again and failing as Geraint Jones gloves the chance behind the stumps.
1327: Gilchrist picks up successive boundaries off Flintoff, first a streaky shot over gully and then a meaty punch through extra cover.
LUNCH: Your interval views
The messageboards are buzzing with England fans on a high after an incredible first morning of the Ashes series at Lord's.
Dave emails in to say: "That was the best morning session ever, or at least the best morning's worth of Test cricket for a while.
"Not just because England took five wickets but the aggression, the competition... all the elements of Test cricket that we enjoy."
But the Australians' confidence has not been completely shattered by their shock two hours at the home of cricket.
Andy SW cautions: "I cannot get over you guys. You've had years and years and years of this sort of carry on at the start of a match or a series only to be put well and truly in your place.
"I would have thought you'd actually wait until you'd won a match before questioning Australia's skill or proclaiming England's greatness.
"It seems the inherent smugness of some of you just can't help bubbling to the surface."
Join in the debate by texting or emailing us, or via the TMS message board.
KEY MOMENTS OF THE FIRST SESSION:
1228: Gilchrist dallies outside the off-stump and just misses before prodding Flintoff past point for four. Another boundary follows over gully but the shot is streaky and far from convincing.
1224: WICKET Australia 87-5 (Clarke 11)
Jones strikes Clarke on the pads and rises in appeal for lbw. Umpire Rudi Koertzen takes what seems an eternity before slowly elevating his finger and sending the Aussie batsman on his way.
Simon Moule has e-mailed our Ashes blog to say "a little over half a session gone and the Lion is roaring. The lads are pumped, and they have the belief. We have arrived!"
1153: WICKET: Australia 66-4 (Martyn 2)
Australia sink further into trouble as Jones strikes with his very first delivery, Martyn edging behind. England cannot contain themselves as the bowler wheels away in delight.
WICKET Australia 66-3 (Langer 40)
Flintoff strikes with his fourth ball in Ashes cricket as Langer miscues a hook shot and is caught at square-leg by Harmison.
1139: WICKET Australia 55-2 (Ponting 9)
Harmison gets his man as Ponting dabbles outside the off-stump and is caught at third slip by Strauss. Ecstatic team-mates rush to Harmison and congratulate him.
1123: A vicious Harmison bouncer beats Ponting for pace and crashes against the grill of his helmet, cutting the Aussie skipper on his right cheek. A drinks break follows to allow time for the blood to stop flowing.
1116: MISS: England squander the chance to make another breakthrough as Pietersen drops Ponting at gully. Hoggard's disappointment is palpable.
1113: Harmison gives Langer too much width and pays the price as the left-hander cuts for his fourth boundary of the morning.
1108: WICKET: Australia 35-1 (Hayden 12)
Langer turns Hoggard backward of square for three before Hayden misses a drive and is bowled. England's Ashes campaign is under way.
1103: Langer steps onto the front foot and crashes Harmison through extra cover for four.
On the Test Match Special radio commentary, Aussie selector Merv Hughes enthuses over a "lovely shot".
1046: Harmison ends a better over by piercing Langer's defence and missing off-stump by inches.
1041: Langer cuts a fairly straight and short ball past point for four before driving hard but playing a long way outside the ball. Hoggard loses his line and bowls three balls down the leg-side.
1035: Langer regains composure to face again, clipping the next ball through mid-wicket for three. Harmison errs down leg-side to gift Hayden a boundary to fine-leg before two runs through mid-wicket completes an eventful first over that goes for nine runs.
1030: The first ball of the 2005 Ashes sees Langer let Harmison's rising ball go through to the keeper. The next ball strikes the left-hander on the point of the elbow, leaving him in considerable pain. There is a delay as Australia's team physio runs onto the field.
1028: England take to the field under a sky much more overcast than 30 minutes ago. Langer and Hayden soon follow as Harmison and Vaughan converse at the top of the opening bowler's run.
England: M Vaughan (capt), M Trescothick, A Strauss, I Bell, K Pietersen, A Flintoff, G Jones (wkt) A Giles, S Jones, M Hoggard, S Harmison.
Australia: R Ponting (capt), M Hayden, J Langer, D Martyn, M Clarke, S Katich, A Gilchrist (wkt), S Warne, B Lee, J Gillespie, G McGrath.
Umpires: R Koertzen (SA), Aleem Dar (Pkn).