Bishop's Christian protesters in court

Protesters at Julie Bishops Subiaco office were arrested. Picture: Sharon Smith/The West Australian

The 11 Christian protesters who staged a sit-in at the Subiaco office of foreign minister Julie Bishop have all appeared in court amid another protest about children in detention.

The protesters - who identify with a variety of Christian churches including Churches of Christ, Riverview, Baptist, Uniting and Anglican - entered the offices of Ms Bishop last month to stage a peaceful protest.

They conducted a prayer vigil in support for what the said were "children imprisoned by Australia's inhumane asylum policies".

Police were called after the protesters, nine men and two women, refused to leave.

The group were all charged with trespass, and were listed together to appear in Perth Magistrates Court on Friday.

With dozens of supporters in tow sporting banners - including Janet Holmes a Court, the group sang hymns outside court before their appearance.

Their case was adjourned until May 28, when an application will be made to have the charges dropped.

Following a similar action in the office of Immigration Minister Scott Morrison, the group protested against the treatment of more than 1100 children in Australia's immigration detention centres.