BR rail red had several uses, initially as the flame red introduced to brighten up the Rail Freight image, starting as a stripe along the top of the sides of air-braked vans and open wagons, later low-sided wagons were all-over red.
The shade was also used initially for the red band of InterCity executive of 'rasberry ripple' livery and no doubt many will also remember the signature Network South East red lamposts.
18ml pot of water based acrylic paint.