Hi,
I did some investigation on this in July 2020 when I was given Oestrodose instead (called a "parallel import"), which was a similar looking bottle but with a sticky label over it.
The original Estrogel bottles (as I was initially given by my Meno clinic) can be ordered by your pharmacy from several suppliers, eg AAH, Alliance healthcare and Phoenix, whichever they use.
They need to use the "PIP code" 217-1775 which the GP can also quote if necessary.
I hope this is still the case, I use estradot 50 patches now, so haven't used gel in a while. I have tried to paste a photo of the gel from Google on a link but it didn't work, sorry.
I hope maybe someone else will jump in and give you the latest on the gel so you can get the correct one?