Quick line check. 

Villain was running 27/21/14 and cbet 96 ish.

BTN: £51.92

Hero (SB): £72.97

BB: £88.19

UTG: £82.76

CO: £85.66

Hero posts SB £0.25, BB posts BB £0.50

Pre Flop: (pot: £0.75) Hero has Kd Kc 3s 6s

UTG raises to £1.75, fold, fold, Hero calls £1.50, fold

Flop : (£4.00, 2 players) Ad 2h Ks

Hero checks, UTG bets £2.80, Hero calls £2.80

Alright, so here's what I thought: I could raise this for value, but if I get 3bet it would get kinda ugly because I don't think I can get it in good ~140bb deep, plus I block his AK quite significantly.  His flop c-betting range should be very wide and I am very much ahead of it, but when I raise here I just think he will fold almost all hair, even some weak Ax that I obv don't want him to fold.

On a sidenote, the flop is rainbow and I don't have to worry about too many draws.  Q/J/T on turn are kinda bad, and maybe 5/4/3 too (but to a lesser extent).

Still an easy x/r?

Turn : (£9.60, 2 players) 8c

Hero checks, UTG bets £8.50, Hero calls £8.50

He continues to bet close to pot, and once again I thought raising is a bit too thin.  

River : (£26.60, 2 players) 7h

Hero checks, UTG bets £22.50, Hero calls £22.50

Ditto.

Did I play nit up too much in this hand?  It kinda sounds horrible, but I just didn't have the right moment to go for a raise.