I'd say it comes down to a difference in philosophy between the US and UK.
In the US, they test for everything possible and in most cases insurance foots the bill. Also, there's a much greater lawsuit culture in the US, so doctors are afraid of getting sued for the slightest mistakes.
In the UK, they rely on the patient's description of the problem to determine what the most likely diagnosis is. In a publicly-funded system, specialists and scans are expensive and most often just confirm what the doctor already knew. The practice of medicine in the UK seems to be much more practical and problem-focused rather than the cautious-preventative model in the US.
In your case, they probably figured that if there were a problem with your wound you would have said so.
As for whether they should have examined you when you asked for it, it could just be a miscommunication depending on how you phrased the question. If you said "will you look at my wound?" (an inquiry) then the answer is what you got: no, they're not planning on it. If you said "please look at my wound" (a request) and they didn't, then if it were me I would have a problem with that.
I don't really know much about baby care, but judging by the whole philosophy of how the UK system operates, I'm not surprised that they would rely on you to report problems rather than have the GP go looking for them. Everyone knows a mother's instinct is often the most reliable, anyway.
But of course, if you're concerned then by all means ask them about it.