Sorry, I'm a nerd. When someone tells me something, I want to know the reason behind it.
I won't just take your word on it, since I've seen contrary evidence everywhere I've looked. And I was beeing a bit facetious, in response to your slightly flippant "bumsex" reference.
My diabetic friend is no longer ineligible. He's been completely reliant on synthetic insulin since before he was old enough to donate, but they lifted the restriction, and since then he's donated more than 10 gallons.
The only specific reference I can find to menopausal women on HRT was to say they are eligible.
The issue with blood plasma exists -- specifically, a higher risk of thrombisis -- but hrt is hardly the only thing that can do that, and it's not like every transsexual woman is getting blood clots and dying. You're living with that blood 24/7/365. I think that most people bleeding out on an ER stretcher would love to have a pint of your blood (provided the type matches and you don't have some nasty disease).
Please find a reference from the NHS or British Red Cross -- I can't find it, but if you can, I'd be very interested. I'm not denying that what you're saying is true. I just want to see some evidence for it so that I can understand the reasons better.
~A