The Australians have several ships in the area and have stopped mines being laid and give covering fire to the British troops landing on the beach.
Our air force has dropped some bombs but are mainly used as guard duties for the mid air tankers and to the spy planes. We also have some spy planes (orions) patrolling the seas.
Our army is mainly (all?) SAS troops that are "deep" within Iraq carrying out "secret missions (sabotage?) and observation duties. The same duties that they carried out to very good effect in Afghanistan. Understandably these troops would not have press with them and therfore will not feature in the CNN or FOX firework displays.
We have not sent many troops, but what we have sent is of a very VERY high quality. Trust me we are not there to peel potatoes
And do not forget that if this all goes pear shaped and there is a united Muslim backlash that the worlds biggest Muslim country is sat just a few miles of our northern border.
So obviously we are also undoubtedly busy taking precautions protecting ourselves and our other new neighbour "east Timor" whom we liberated from the shackles of some fanatical Muslim extremists causing terror and persecution, who where backed by the Indonesian government. So if you think about it we have a lot to do and are probably streched beyond our capacity.