Just thought I'd put an update in, in case anyone is interested:
Finally sorted out seeing the GP, she did a DRE and PSA test, some enlargement, but PSA negative.
So onto Alfusosin, then Tamsulosin, neither of which had much effect on the flow rate. Then we added Finasteride which still didn't help, but did give me dry orgasms and mood changes, not fun.
Back to the GP who agreed primary care wasn't solving this and referred me to urology.
Consultation with nice man in private hospital, he did a flow test and agreed it was (quote) "rubbish"! He told me to stop the Finasteride (which was a relief) and advised I'd need a TURP, which carries the risk of dry orgasms as a side effect.
The TURP was performed in Oct 25, some discomfort afterwards, but that eased after a week or so. The good news is flow rate is back to firehose levels, it's amazing! The bad (ish) news is orgasms are now dry and looking like they'll stay that way, which I'm coming to terms with, but is odd.
Had a follow up last week and was told the biopsy they took during the TURP was negative and I'm unlikely to need a repeat anytime soon.