Sky Group withdrawing health measure covered by National Insurance (5)
I believe the answer is:
nimbi
'sky group withdrawing' is the definition.
I can't judge whether this defines the answer.
'health measure covered by national insurance' is the wordplay.
'health' becomes 'im' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'measure' becomes 'B' (B is an example).
'covered by' means one lot of letters goes inside another.
'national insurance' becomes 'NI' (UK tax).
'im'+'b'='imb'
'imb' inserted within 'ni' is 'NIMBI'.
Can you help me to learn more?
(Other definitions for nimbi that I've seen before include "Dark things" , "Rain clouds - halos" , "rings" , "They may surround the head" , "Rain-bearing clouds" .)