Yes - B would finish at 184. The main reason I think this is a B wave is that the waves are overlapping, extending into what would otherwise be a wave 1 impulse. This is not alowed in EW rules except in a wave 2, but this can't be the case here. Further, this move has taken a whole month to move just 230 points, which I think is too slow for an impulsive wave. It's most likely to be an abc-X-abc.
If I'm wrong, and this has been an impulse up, it must be wave 1 of 5, in which case the Ftse is going much higher in August/September, but it just doesn't count cleanly. I think this count is unlikely.