HI everybody for taking the time to reply, I think in particular Skyjob may have hit the (final) nail on the head.
Amazing how quickly you forget - in previous companies on classics there were flap options (1,5,15) for T/O so the potential to T/O with LED fully extended....although F15 was very infrequently used.
In present company on NG only F5 is used at all times.
So either a VNAV or a manual green dot retraction will provide "protection".
On approach VNAV will set the appropriate speed for any flap selected, in MCP operation full LED extended will not occur until flaps 10 selected (210kts max), if you don't bust the flap limitation speeds then approach also has "protection".
All makes sense, great stuff!
NOW the ONLY remaining point: IS THERE, actually, a structural/engineering limitation of 235kts with LEDs fully extended?????????
Or just a Boeing aviation urban myth!!!!!!!!!!
If there IS there would be no need to worry the humble drivers - who already have enough to worry about as (as above) any such limitation would be covered.
Anybody who CAN quote, or better provide, anything from Mr Boeing??
Once again thanks all - greatly appreciated.