Nope, no yellow triangle on the airspeed indicator unless the pilot or his
instructor choose to put one there. Not a requirement. We do use 1.3Vs as
an approach speed, but it normally isn't marked.

It sounds like you've got a good approach method, one easily duplicated for
students here in the US, includeing the yellow triangle.

I believe that MOST aerodynamics work the same on your side of the pond,
sans one.... the $$$ needed to create lift are higher on your side of the
pond!

Jim