Hi there,
I don't know much about the other agents although I recognise the names as given by other members on this site. We are currently using a company called Australian Visas, in Windor, SL4 1YB. The lady is called Sonja Rakus, she is Australian and also a lawyer so can sign necessary paperwork. Her fee is £1440 payable in stages, she has been very helpful and prompt with us so far anyhow!
Check out her website at
www.australiavisas.co.uk or contact her on tel: 01753 752 444
My doctor recommended her as she is a personal friend, so that gave me confidence in handing over my money!!
Good luck :D