Tory leader David Cameron has said MPs' expenses should be published in an "uncensored form", including addresses.
Speaking at an EU summit in Brussels, Mr Brown said: "The redacted expenses were part of the old system; that cannot be the new system.
"The old system is being swept aside by the changes that we are making and a new, far more transparent system, is being introduced.
"While ensuring that security issues are addressed, as they have to be, our first principle must be maximum transparency."
US elected officials should adopt the same attitute.