Which side of the road do they drive in the U.K?

In Britain the people drive on the left-hand side of the road
The custom goes back to the days of horse cars when they drove from the left because they had better visibility of the horses and it was more practical to them.

In colombia the people drive on the right- hand side of the road.
Traffic in the city is very congested, there are many cars and few roads. There are very few bus stop. The following commentary is not mine but it reflects reality. “Driving in Bogota or go as a passenger, is a sport of extreme risk, there are fun jams, dramatic, changes in the sense of spontaneous tracks, trying to lighten the traffi, driving in terms of the license plates of cars, some pairs days during peak hours and the other odd, at traffic lights artists, vendors of all kinds everywhere .... not suitable for easily impressionable beings”.