TBF you and others are missing the reality when you post stuff like this......
" Told not to"???
You're the PM for fcuks sake man!"
Every day for the last scores of years senior government officials, including PMs and SoSs have either asked or been told what lines to take on given situations or in preparation of announcements.
Nowadays SPADs are involved - it used to be Civil Servants
The problem with Johnson is that he will just bumble that fact out - he will have indeed been briefed before a presentation/briefing and told what to emphasise and also what definitely not respond to/expose.
There is nothing new here - I have heard Jack Straw - someone I consider to be quite forensic (lawyer by profession) ask for his lines to take on a subject.
Johnson is just a bumbler - is that a word?