Wherever you find ketchup in the UK, you will also find this....

HP sauce, or simply 'brown sauce', is an institution. As a kid, I remember we has a choice of two sauces at home- tomato ketchup and HP. It was too spicy for me as a young kid, but when i was about 10yo, I got the taste for it. Now, I wouldn't consider it at all spicy!
A couple of years ago, HP sponsored a sporting icon, Jimmy White, in one of the big snooker competitions, and Jimmy changed his name to 'Jimmy Brown'. Unfortunately it didn't work out for HP as well as it could have, because the snooker was on BBC (a non-commercial channel), and Jimmy is so famous, that the commentators just called him 'Jimmy' the whole time. It was quite funny at the time.
www.youtube.com/watch?v=9i_EWHQ18Gs