Here in UK most of the International Licence does not work.
Few of the countries licence is exchangable and almost all those countries are in Europe. May be Australian licence is exchangable.

Almost all those middle east driving licence is useless here.
I had two of them.(Oman and UAE)
As per the law you can drive for one year (From the date of your first Entry) with the foreign country licence. Meanwhile you should apply for the local licence and get it.

No Agency can push your applications. Everybody goes through the same process.
For more info, please visit..WWW.dvla.gov.uk