Whoops, and apologies. After wasting much of my own and then your time, I have just found the toolbar toggle.
Much embarrassment and shame.
Similar problem with me.
In fact seems identical to this one http://wordpress.org/support/topic/formatting-toolbaar?replies=7
Lower of two formatting bars is missing – the one that had font style (paragraph, header, etc) and colour, and some other stuff in it
Just updated everything
