Small parliamentary group upset me - it let sect come (6,9)

I believe the answer is:

select committee

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'small parliamentary group' is the definition.
The definition suggests a singular noun which matches the answer.

'upset me it let sect come' is the wordplay.
'upset' indicates an anagram.
'me'+'it'+'let'+'sect'+'come'='meitletsectcome'
'meitletsectcome' with letters rearranged gives 'SELECT COMMITTEE'.

Can you help me to learn more?

(Other definitions for select committee that I've seen before include "parliamentary group" , "Group of MPs" .)

I've seen this clue in The Daily Express.

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