Veteran Australian entertainer Rolf Harris' longtime pal, singer Vince Hill, has vowed to stand by the star as he fights child sex abuse charges.

The artist/musician, 83, has been charged with nine indecent assaults involving a 14-year-old girl and another girl aged 15 and 16 between 1980 and 1986. He is also facing four counts of making indecent images of children in 2012.

The latest development comes after Harris was arrested in March (13) as part of an investigation into claims late British Tv host Sir Jimmy Savile molested hundreds of underage children during his career.

Harris' family has kept quiet over the scandal, but Hill, a musician and producer, insists his friend's wife Alwen Hughes will be hit hardest by the news.

He tells Britain's Daily Mirror, "This is going to hit her very hard. She's crippled with arthritis, suffers problems with her hips and knees and is in her 80s.

"She'll be devastated by today's news but I'll let things settle down before trying to contact her and Rolf, to reiterate my unwavering support."

Hill also insists he will support Harris throughout his upcoming legal battle: "While everyone is innocent until proven guilty I hope he'll be Ok because a possible prison sentence would hit him hard.

"Among those who have had their collars felt (been arrested) by police, he is by far the biggest name and is a national monument. My stomach turned when I heard the news today, but I'll always be there for him. This just isn't the Rolf I know. Whatever the outcome is, we won't desert him."

Harris is expected to appear at Westminster Magistrates Court in London on 23 September (13).