Even after 1916 and the formation of the Wolf Cubs the pressure from younger brothers to join in the fun of Scouting never really went away. The U.K.'s answer to this was the Beaver Scout Section. Many people think that the section started in the early eighties, but in reality, it started as early as 1963 in Northern Ireland.

The first Pre-Cub section was started by the 1st Dromore Group in N. Ireland, it was initially known as The Little Brothers. Two years later seven more Groups started up in Belfast. In 1966 (the year of the great shake up in U.K. Scouting) the name Beavers was adopted (this had been one of the names that Baden-Powell had considered fifty years earlier when starting the Wolf Cubs), and the final details of uniform, age-range and basic organisation adopted. In the following few years the support was set up to help the Leaders, and reports were made to the Scout Association with details of the progress. Five years later, in 1971, there were approximately 900 boys and 150 leaders in 60 teams.

1973 saw the formation of Beavers across the Atlantic, and the next year the Scout Association of Ireland started Beavers up in the Republic of Ireland. The following year saw an important step along the road to full integration when the sections name changed to Beaver Scouts. It also saw a national working party set up to consider provisions for under eights in the rest of the U.K. The Wellbeloved Report was commissioned to consider this, and was generally in support of Pre-Cub organisations and recommended further action to be taken, this was taken up by the working party. The first stage was to set up a trial on mainland Britain, and has become quite common, Scotland was chosen to start the ball rolling.

Beavering really got underway in October 1982, when they were officially introduced throughout the U.K., with the introduction of the new uniform (of a grey sweatshirt and turquoise necker with a maroon woggle - and optional jogging bottoms) for boys. Three and a half years later (on April 1st, 1986) the Beaver Scouts finally became an official section throughout the U.K., with the adoption of a simple promise, and so the Beavers became official members of the World Scout Organisation.

The first Beaver training scheme of consisted of just the membership badge and one other badge. The later awarded after the boy had been (active) in the Colony for at least a year. For a long time just one badge was felt to be not enough, as a whole year was viewed as a long time for a boy to wait for his Beaver Badge; and what would you do with a boy who had finished his Beaver badge, as he no longer had anything to work for. Some Colonies added their own badges to their scheme to recognise the progress of the boys.

In 1995 as part of a relaunch of the section (with new handouts and booklets) this was rectified to a certain extent with the introduction of a new badge scheme, very similar to the old, but with the single Beaver Scout badge being split into two halves (of six months each) and the introduction of a new Beaver Scout Challenge.

Other minor changes in the first ten years of Beaver Scouting on the mainland UK have been: the option of replacing the turquoise necker with the Group necker (about 1990); the acceptance of girls in all sections of the movement in 1992; and (when the section was relaunched in 1995) the option for lodge coloured woggles instead of the maroon beaver woggle.