Gray and Ford were suspended for three weeks for the dangerous clear-out of a ruck during Scotland's final pool match against Samoa at the weekend.

But Scotland appealed, and on Saturday were told that both men have been cleared for Sunday's match.

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Scotland are yet to confirm whether Gray and Ford will now come back into the team.

Ford was to be replaced at hooker by Fraser Brown while Tim Swinson was set to play at lock in place of Gray.

There were two other changes to Vern Cotter's side: Peter Horne is in for Matt Scott at inside centre and Blair Cowan replaces Ryan Wilson at blind-side flanker.

"It's always nice to be part of the final eight of any qualifying competition, the guys are very excited about being here," said Cotter.

"We will go into this game with the belief that we can compete with and dominate a very strong Australian team, and move forward to the last four.

"They are a front-foot momentum team so defence will be key but also getting our hands on the ball and expressing ourselves as we like to."

SCOTLAND TEAM TO PLAY AUSTRALIA AT TWICKENHAM

15 Stuart Hogg (Glasgow Warriors) – 37 caps; 9 tries, 2 pens, 51 points 14 Sean Maitland (London Irish) – 19 caps; 3 tries, 15 points

13 Mark Bennett (Glasgow Warriors) – 12 caps; 5 tries, 25 points

12 Peter Horne (Glasgow Warriors) – 14 caps; 1 try, 1 con, 1 pen, 10 points

11 Tommy Seymour (Glasgow Warriors) – 21 caps; 10 tries, 50 points

10 Finn Russell (Glasgow Warriors) – 14 caps; 2 tries, 3 cons, 1 pen, 19 points

9 Greig Laidlaw CAPTAIN (Gloucester) – 45 caps; 4 tries, 55 cons, 99 pens, 427 points

1 Alasdair Dickinson (Edinburgh Rugby) – 51 caps; 2 tries, 10 points

2 Fraser Brown (Glasgow Warriors) – 14 caps

3 Willem Nel (Edinburgh Rugby) – 7 caps; 1 try, 5 points

4 Tim Swinson (Glasgow Warriors) – 16 caps

5 Richie Gray (Castres) – 50 caps; 2 tries, 10 points

6 Blair Cowan (London Irish) – 14 caps; 2 tries, 10 points

7 John Hardie (unattached) – 4 caps; 2 tries, 10 points

8 David Denton (Edinburgh Rugby) – 31 caps

Substitutes

16 Kevin Bryce (Glasgow Warriors) – 3 caps

17 Gordon Reid (Glasgow Warriors) – 14 caps

18 Jon Welsh (Newcaslte Falcons) – 10 caps; 1 cap, 5 points

19 Alasdair Strokosch (Perpignan) – 47 caps; 2 tries, 10 points

20 Josh Strauss (Glasgow Warriors) – 4 caps

21 Henry Pyrgos (Glasgow Warriors) – 17 caps; 4 tries, 20 points

22 Richie Vernon (Glasgow Warriors) – 23 caps

23 Sean Lamont (Glasgow Warriors) – 100 caps, 14 tries, 70 points

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