<P> It was subsequently televised about once a month Hill relates how Reed came to stay with him and his wife , Margaret Potter , in Cheshire , and was so taken with the `` Blue Peter '' flag on the side of the ship and the programme in general , that he asked to rename it and take it to London to be broadcast on a weekly basis ( see Reed 's obituary ) . The `` Blue Peter '' is used as a maritime signal , indicating that the vessel flying it is about to leave , and Reed chose the name to represent ' a voyage of adventure ' on which the programme would set out . Hunter Blair also pointed out that blue was a child 's favourite colour , and Peter was the common name of a typical child 's friend . </P>
where did the name blue peter come from
to represent ' a voyage of adventure ' on which the programme would set out