Get a load of Tories to tour British plant (9)
I believe the answer is:
eyebright
'plant' is the definition.
'get a load of tories to tour british' is the wordplay.
'get' means one lot of letters go next to another.
'a load of' becomes 'eye' (I can't explain this - if you can you should give a lot more credence to this answer).
'tories' becomes 'right'.
'to tour' indicates putting letters inside (to tour can mean to go around).
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'eye' next to 'right' is 'eyeright'.
'eyeright' placed around 'b' is 'EYEBRIGHT'.
Can you help me to learn more?
(Other definitions for eyebright that I've seen before include "White-flowered plant" , "Wild flower - get by hire (anag)" , "A plant; they're big (anag.)" , "Traditional remedy for vision problems" , "Simple" .)