Winning the toss proved to be crucial for Michael Clarke, who watched on from the balcony as his side took full advantage of the conditions on a day when England's bowlers were offered very little encouragement from the pitch.
David Warner was the only batsman to lose his wicket when he picked out James Anderson with a foolish shot off the bowling of Moeen Ali, before Steve Smith (130*) joined Chris Rogers (158*) to put on an unbeaten partnership of 259 as both men recorded fine centuries to lead Australia to 337-1.
Read below to find out how the action unfolded on the opening day.
AUSTRALIA: Warner, Rogers, Smith, Clarke, Voges, Marsh, Nevill, Johnson, Starc, Hazlewood, Lyon
"It's overcast, a day one wicket. There will be something in it but it looks a very good pitch. We've had a lot of success over our history of cricket at Lord's," he told Sky Sports.
"Cardiff was a kick up the backside for us; we didn't perform there."
"Moeen is ready to go. He's played a lot of cricket. It's quite common for bowlers not to do a lot between games."