Hold'em NL (£0.15/£0.25) Ring game

SB (£15.90 in chips)
BB (£9.50 in chips)
UTG (£20.95 in chips)
UTG+1 (£37.37 in chips)
Hero (UTG+2) (£44.36 in chips)
MP1 (£20.92 in chips)
MP2 (£27.57 in chips)
MP3 (£55.83 in chips)
CO (£3.28 in chips)
Button (£10.60 in chips)


SB posts £0.15
BB posts £0.25
dealt to Hero :Qs::Qc:
UTG folds
UTG+1: calls £0.25
Hero: raises to £1.25
2 folds
MP3: calls £1.25
CO: calls £1.25
3 folds
UTG+1: calls £1
----- FLOP -----
UTG+1: bets £1.25
Hero: raises to £5
MP3: folds
CO: is all-in £2.03
UTG+1: calls £3.75
----- TURN -----
UTG+1: bets £4
Hero:

Do I raise again? Just call? fold because he must hold a set?

Read UTG+1: Vol put $ in pot= 36%, PRF raise = 0% (42 hands PT)
No read on CO