How could I have played this hand better to get more value?

My read on the Villain from a previous encounter is on showdown he usually had a winning hand.

£1/£1 Live.

I'm BB (£140) KK

Seat 6 (£60) limps
Seat 9 (£275) limps
SB (£205) limps

I raise to £9 and all call.

Flop 857

SB donk bets £15
I flat call, seat 6 folds and seat 9 calls

Turn 3

SB bets again £15
At this point I'm thinking of reraising, but with someone behind me and SB usually betting only when he has hit, I just called.
Seat 9 calls as well.

Flop J
SB bets £15 again
After thinking again, I just decide to call
Seat 9 folds

SB shows 1010

I'm now kicking myself for not reraising.

Your thoughts guys?

I raise the flop.

He will be calling with the straight draw I expect, and TT/99/JJ/QQ

If he has aces its ok to go broke IMO.

Turn is a blank unless some goofball 93 83 33 hand.

IMO

looks like a very loose game

Don't be so passive, raise the flop and raise it good. 4 handed to the flop is bad for your kings. If somebody is drawing u have to make him pay for it.
If you get played back at then it's read depended, I wouldn't be that ( or at all) afraid of Aces from the SB because it would be really stupid move to limp call aces in his spot.

Only thing u can be afraid of here is flopped set , it would make sense from a SB to limp/call a small pair like 5's.

Be more aggressive with your big hands, if u run into a set...tough luck, but never give that many free cards.
If u think u r gonna get many callers, than raise bigger pre.

was 9x a standard pre flop raise for this game or did you turn your hand face up by raising this amount?

If it was standard then I agree raise flop, but if you turned your hand face up then I think being a bit cautious and calling down was ok (but if this was the case then more value could have been had with a smaller pre flop raise and raising the flop)

It's a multiway hand and you have a big overpair on a co-ordinated flop. There are going to be several straight draws and pairs out there. Anyone wth a 6 has an OESD, T9 has an OESD, hands like 97, 98, 95 have a pair and a gutshot, A8s has TPTK and possibly a BDFD. Get value from all these draws and pairs, or knock a few of them out so you have a bigger share of the equity by raising the flop.
By calling, you are pricing in all the drawing hands. You're basically saying "Please suck out and beat my kings". So RAISE!

Appreciate the replies guys.

The standard raise for the table seemed to be £5-£6.
I popped it to £9 as I didn't want to scare everyone off, didn't expect them all to call tbh.

I definetly would have bet the flop had it not been for the SB donk betting me.
That slowed me down, as I was thinking whether he had flopped a set or two pair.
Because of his showdown history, I flat called as opposed to reraising purely for pot control.
But yes, I guess I should have raised it to price out the drawing hands.