The history of youth work goes back to the birth of the Industrial Revolution in the 18th century, which was the first time that young men left their own homes and cottage industries to migrate to the big towns. The result of this migration was an emergent youth culture in urban areas, which was responded to by the efforts of local people.
In 1844 the first organisation whose sole aim was to address the needs of young men was founded. The YMCA was set up by George Williams. Williams was from London and his goal was to create an organisation that catered for the spiritual and emotional needs as well as the physical needs of the young men that he saw around him. The delivery of Williams' work was mainly through missionaries working on the streets of London though it wasn't long before the first hostel was founded.
Work with young women however was seen as less important because young women's needs at this time were seen as being centred on home making, which were already (supposedly) provided for in the home. This changed in 1878 when youth work pioneer Maude Stanley developed work with young women around the Five Dials area of London. She went on to establish the Girls Club Union.
Later that century in 1883 the Boys' Brigade was founded by William Alexander Smith. He was a teacher and like Williams in 1844 his aim was to provide for the needs of young men that he worked with. His organisation was based more around the military than the YMCA was, though it was still mainly a Christian organisation.
Still staying within London in 1896 Lily Montagu contacted young Jewish people from Eastern European families in the east end and set up an organisation called Children's Synagogue Services. Montagu went on to become a founder member of the National Organisation of Girls' Clubs (now called UK Youth) and was a key figure in the development of Jewish youth work.