Walker headed home midway through the second half and a point was the least Carlton deserved in a determined display at the promotion chasing Owls.
Wayne Scott made two changes from the side which lost at Leek last time out, with Louis Danquah and Niall Davie replacing Eddie Schoenecker and Kaylum Mitchell. It was Davie’s first start of the season after a long-term injury.
The match kicked off 15 minutes late after one group of Carlton players had some difficulty getting to Grimsby for the midweek game.
The Millers began the sharper and took the lead on just five minutes. Ben Hutchinson played a ball over the top which Jordan Wilson ran onto. He outpaced Peter Winn and fired a lovely angled drive past Jonathan Saltmer in the Owls goal.
The Millers continued to take the game to the home side and when Mamoke Akaunu flicked on a Riece Bertram free kick, Wilson was denied by a late save from Saltmer.
Wilson then ran down the left and crossed dangerously. The ball was cleared only to Davie whose snap shot flew just over.
Little had been seen of the home side in the first half hour but Brody Robertson’s fierce shot was deflected wide for a corner.
Cleethorpes then won possession from Danquah and attacked quickly with Andrew Taylor firing over the bar after a good move.
The Owls levelled on 36 minutes. Hutchinson jumped over a tackle in midfield and Robertson was sent away down the Cleethorpes left. He angled in on goal and fired across Jack Steggles and into the net via the post.
Carlton almost regained the lead within a minute. Akaunu sped down the right and crossed for Wilson whose shot drew a good save from Saltmer.
Wilson then fed Akaunu in space but he hesitated for a moment too long and his shot was blocked.
Akaunu beat Winn and crossed again to Wilson whose low shot was very well stopped by Saltmer.
Cleethorpes almost took the lead on the stroke of half time but Steggles did well to save from Robertson.
The home side had shown very little of the form which had propelled them into the top three prior to a 12 point deduction for an issue with a player’s registration but that changed in the opening part of the second half when, cheered on by a vocal support, Cleethorpes were on top.
They took the lead on 51 minutes when Robertson’s run and cross found Tim Lowe who converted at the far post.
Oliver Donald then headed over unmarked from Jonathan Oglesby’s cross.
Carlton attacked and when Donald brought down Wilson in the area it looked a stonewall penalty. The referee waved away Carlton claims much to the striker’s amazement.
Wilson then fired the ball across the face of goal and Akaunu was unable to connect at the far post.
Carlton equalised on 70 minutes. Hutchinson’s corner was headed high into the air. The ball dropped onto the top of the crossbar and bounced back into play. Walker reacted quickest, heading goalwards and although Saltmer tried to keep it out, it ricocheted just over the goal line to the delight of the travelling fan behind the goal.
Both sides had late opportunities to win the game. Marc Cooper saw Steggles save his header and Akaunu fired over after running 50 yards on his own, but a draw was a fair result.
Carlton Town: Steggles, Lucas, Fletcher, Bertram, Danquah (Mitchell 58), Walker, Davie, Elliott, Wilson (Schoenecker 81), Hutchinson, Akaunu. Unused substitute: Bailey
Goals: Wilson 5, Walker 70; Brody Robertson 36, Tim Lowe 51
Carlton Town Supporters Club MOTM: Jordan Wilson