You asked!
Decades ago arriving at a test at Brands Hatch very early in the morning having driven through central London to get there (it was pre M25) I made a cup of tea in the truck and it was so good I checked out the brand. It was "Brooke Bond Choicest Blend" and the truckie (the truck drivers did all the test logistics back then the team manager usually didn't go to tests at all) had chosen it because of the dark green box matched our team colour scheme (so it was early 1980s).
At first I guessed I enjoyed it so much because I was gasping for tea after the drive but drinking it throughout the test realised it was the best most refreshing tea I had ever drunk. I drank the loose leaf version until they stopped blending it - which was a massively big deal for me
.
Anyway I started trying to find something similar and had months of disappointment but eventually reading about a Brit in California getting their tea from a mail order place in the North East called Ringtons, I looked it up and bought a selection of their blends.
Great rejoicing - their "delux refreshing" blend was really close and I changed to that. Then they stopped blending it
and after a few years supplied "breakfast" in my regular order. It isn't as good, though they told me it is the same, but it is still my preferred blend, I have a mug here as I type.
I do have various green, white and black teas I can brew if I wish too but 99% of the time it will be Ringtons Breakfast, loose leaf made in a pre- warmed London teapot company strainer teapot so I can remove the leaves when properly brewed. I drink between 2 and 3 litres of it per day.