Hi jodipodi,
If the applicant applies for a 190 visa onshore in Australia while his family are in the UK, the applicant would have to be in Australia when the 190 is decided.
His family, at the time of the application living in the UK, would have to be in the UK when the 190 is decided.
The applicant could apply for an Australian Bridging Visa B after applying for the 190 to allow him to visit his family in the UK.
His family in the UK will not receive any Australian bridging visas.
Fitzpatrick Immigration Australia
fitzpatrickia.com
MARN 1576327