"Clive D. W. Feather" wrote in message,

The wording appears to have changed. It *was* something like "...
oncoming traffic going ahead or also turning right". In other words,
*one* car can wait on the box to turn right from each direction, but
that's all; the second car in each queue must wait to enter the box,
just as when going straight ahead.

--
Rule 99 of the 1978 HC says '....you may enter the box when you want to
turn right and are prevented from doing so only by oncoming traffic or by
vehicles waiting to make a right turn.' Which is very similar to the 1999 HC
except for the word 'stopped' being used instead of 'prevented', and a
couple of commas thrown in. So I think you are wrong. More than one car
can queue in the box to turn right, but only if the exit to the right is
clear for them all once the oncoming traffic has ceased blocking the way.

Ian