I became concerned that the front indicators mounted in the headlamp recesses were not very visible, especially with the headlights on.
Not wishing to alter the appearance too much, I mounted some repeater indicators in the front brake intake ducts on the expanded metal grilles within and sprayed the lenses with boy-racer "Backlight" lacquer.
They contain only 5w bulbs so I may replace the fittings with full 21w ones as fitted to the rear- will still hide them with lacquer though.