Very sorry tale Susan and i wish you well in seeking redress. there is certainly a reluctance among some GP's to authorise a simple blood test. I really had to push hard at 63 to get a PSA test before I was diagnosed with Advanced PCa in August.
I remember going for a well person check when I retired at 60 and they tested my blood pressure, choresterol, took blood samples etc but no mention of PSA and i can't help thinking a PSA check then could have caught mine before it spread outside the prostate or at least given me an inkling to keep an eye on it.
I guess the medical profession will always close rank as without frequent checks there is no way of establishing when the cancer started or when it mestatatised outside the prostate.
Hope your husband is responding to his treatment.