I've seen arguments here about circuit arrangements. The British IEE Wiring Regs. define certain standard circuit arrangements, including radial circuits.
Some seem to take the listed arrangements as absolute and insist that a radial circuit has to start at the panel, run to each outlet in turn, ending at the last one.
Others claim that there is nothing wrong with a "tree" arrangement to a radial circuit in which you can branch off at any point which is convenient.
I'm firmly in the latter category.
