Complex sentence: Realising the potential, he began to raise funds for the development of an interactive branch of Flightbookers and, in 1999, Ebookers became the first interactive online travel agency in the United Kingdom.
Split into simpler sentences: Realising the potential, he began to raise funds for the development of an interactive branch of Flightbookers. In 1999 Ebookers became the first interactive online travel agency in the United Kingdom.