Right, my come back to that is:-
I still have the remains of a large tube of Girling Red Brake (rubber) grease, pity I only rediscovered it after buying a large tub of red rubber grease from ebay!
I also still have a small tube of blue mechanical brake grease which is also probably Girling!
Useless extra comment, back in 1978 I bought a secondhand Ford Escort 1.6 Ghia, it had a slightly leaking (Girling) brake master cylinder - not a
problem for me, so I bought it with money off and trotted along to my Ford dealer for a master cylinder service kit - not very easy, as Ford did not know which version of cylinder Girling was supplying to the assembly line. So, needing to get an MOT, I discovered that I had some "used" Girling rubbers from my old 1972 Ford Escort Van - which stopped that leak until a Girling parts place could use the data that I supplied from the nylon tag on cylinder and get me a kit- oh joy!