Please hold my (carefully washed with hot water and soap) hand.
This was actually a lot less hard to get than I thought, my GP I think just got tired of trying to answer my perimenopause queries and complaints about non-existent libido specifically, and referred me to the menopause clinic at the local large hospital. A few weeks later I had a phone appointment with a menopause consultant (!) and we discussed my issues. Both GP and consultant made it clear (with an audible wink) that testogel was ONLY going to be prescribed for low libido and certainly NOT for low energy levels, brain fog etc, but coincidentally, some women did indeed find these things had improved too, as a totally unlooked-for side effect. 
I'm trying hard not to expect a magic wand here. I know that it won't always have a really palpable effect. I've been told it takes at least 8 weeks to kick in, so nothing is going to happen for a while yet! (I will have bloods booked as per the consultant's instructions, and after this initial 4 month supply, will then have to persuade my local NHS GPs to prescribe it - assuming it's going well for me.)
My first hurdle is - how the hell do you divvy up this rather plump sachet of gel into 8 equal parts?? I've got a bulldog clip around the centre which is a start, but worried that as soon as I open one end it's all going to leak out. And no, I do not possess pharmaceutical scales 
(FYI: have been on HRT for just over 18 months. I take 1.5mg Sandrena gel daily, this was titrated down from 2mg by the same meno consultant who thinks my pesky palpitations may now be down to too much estrogen rather than depletion. I take 2 Utrogestan pills for first 12-14 days of my cycle. I do use oevestin cream on/in my fanny.)