Bond creator elevated by Queen and head of government in turn (9)
I believe the answer is:
superglue
'bond creator' is the definition.
(superglue creates a sticky bond)
'elevated by queen and head of government in turn' is the wordplay.
I cannot quite see how this works, but
'elevated' could be 'up' (I've seen this in other clues) and 'up' is present in the answer.
'queen' could be 'er' (abbreviation for Elizabeth Regina) and 'er' is found in the answer.
'government' could be 'g' (abbreviation for government) and 'g' is located in the answer.
'turn' could be 'slue' (to slue or slew is to turn uncontrollably) and 'slue' is found within the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for superglue that I've seen before include "Substance used to stick" , "Gripper" , "solution" , "Fast-bonding substance" , "Extra strong adhesive" .)