Long streamer displayed by group, role-playing (8)

I believe the answer is:

banderol

'long streamer' is the definition.
(streamer can mean a long flag)

'displayed by group role-playing' is the wordplay.
'displayed by' says to put letters next to each other.
'group' becomes 'band' (band can mean a group of people).
'playing' indicates anagramming the letters.
'role' with letters rearranged gives 'erol'.
'band'+'erol' is 'BANDEROL'.

I've seen this clue in The Guardian.

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