My bump map doesn't have anything like that on it yet it still causes these no matter how I change the colour scaling. I'm guessing it could be those seed things the texture has but they look too big. Any help would be great.
Those weird circular/truncated conical bumps are in fact in your bump map texture. At least, I see them when I apply your texture to a simple unwrapped object using the "bump" node. It's the white circles in your texture that are the culprit; they have a gradient around them which makes the cone shape.