Nottingham Forest Boss Not a Happy Bunny
He said: “There was a clear foul on Tyler Walker and it was inexplicably not given - and we found ourselves 1-0 down. Tyler was bemused - 20 seconds earlier it should’ve been our free-kick, those are the fine margins.
“I have to be careful what I say but I thought it was a nailed-on handball
“We can’t cry over that now. All credit to Neil and his team."
Warburton also accused Cardiff of time-wasting and said the game "has to be managed differently" with many Forest fans booing the Bluebirds' players.
Callum Paterson was shown a yellow card for wasting time in the second half, but the Forest boss remained frustrated.
“We were frustrated at many things," he added. "The continual delaying. We have to learn, Cardiff are very good at what they do.
"But that has to be managed better than that by certain people.
“There’s other ways of dealing with that - I have to be very careful what I say, I want to keep within the letter of the law.
“Surely you deal with that early, stamp it out and it doesn’t become a problem.
“When I see someone stroll off the park and take that long, to applause, I find that very frustrating.
"But Cardiff are where they are because they deserve to be. I’m very respectful towards Cardiff, but they do have physicality.
“But we have to deal with it, it’s too easy to say we were bullied."
Would Warburton be speaking to referee Peter Bankes after the game?
“We will do yes. I have no problem with Cardiff City, zero problem with Neil.
“It has to be managed differently.”