Morning All
I have 2 cockers - 1
...
So that would be one cocker then? (Just kidding).
First thought is he may have walked through God-knows-what resulting in matted fur. I'd try soaking/washing his feet (stand him in the bath if he'll let you) checking for mats at the same time, especially between the toes and pads, followed by a thorough teasing out/combing as best you can.
If that fails, I'd be thinking about a trip the vet - you'll need to check the current arrangements with your usual one.