BRUNO: A French circle spins for him.
B
ERUTHIEL'S MOGGIES: Burrowing mammals' concerts and insects' pity - I combine, for them.
G
ALATHEA: Festival articles for her.
FA
STITOCALON: A claw and a nun's cap were sedentary, before they spun around for him.
ASFALO
TH: Shop changes tune, unwilling, for him.
GWA
IHIR: Confused Field Marshal at start of Merseyside peninsula transforms for him.
ROV
ERANDOM: Wander unmethodically for him.
SHELOB: A unit of measure, a vowel shift ... shuffle and see her.
Shall I help?
MOLES' GIGS + BEE RUTH
(Get a wooden spoon ....)
...
Ok, I've put it in.
MOLES' GIGS + BEE RUTH + I.
Over to you,
Huinesoron!
There may be an extraneous I. I'm slipping ... but have now amended the clue to account for it.