The brilliant Pakistan swing bowling trio of Mohammad Aamer (3-20), Mohammad Asif (2-33) and Umar Gul (2-16) used the overcast conditions to perfection, producing wicked late swing to skittle Australia in 33.1 overs.

The bowling trio's devestating late swing saw Australia limp to lunch at 6-73 in Leeds with the second-Test pairing of Steve Smith (10 not out) and Tim Paine (8no) unbeaten.

But Aamer was inspired after the break, producing an excellent inswinger that sailed through Steve Smith's (10) defences first up.

He followed that up next ball by producing an even better delivery to the left-handed Mitchell Johnson that swung late and tilted back his off-stump.

Ben Hilfenhaus (3) somehow negotiated the hat-trick delivery, the tailender not good enough to get an edge on the ball as it screamed past his bat.

Hilfenhaus pushed Australia beyond its lowest Test total against Pakistan with a straight drive off Aamer.

But in a sign of the batting side's dirty day, Hilfenhaus (3) was run out going for a third soon afterwards.

Tim Paine (17) was the last man to go, trying to improvise a shot with No11 Doug Bollinger (2no) at the other end.

The last time Australia lost its first five wickets for less runs in a first innings was in March 2000, when it slumped to 5-29 against New Zealand in Hamilton.

It was also Australia's fifth major batting collapse in its past six Tests on English soil and follows last week's effort of losing 7-51 in the first innings of the opening Test at Lord's.

Australia lost 4-9 in 47 balls in the middle of the carnage yesterday and all of those capitulations in England has come in the first innings.

Australia's lowest total against Pakistan was 80 in Karachi in 1956.

From the outset yesterday, Pakistan's bowlers brilliantly exploited the swing-friendly conditions as Australia slid to 2-20 in the seventh over.