Complex sentence: Escalating road protests starting with Twyford Down in 1992 and culminating with the Newbury bypass in 1996 at which over 1,000 people were arrested led to a cancellation of many road schemes by the new Labour government in 1997 until 2002 when they announced a new road building program.
Split into simpler sentences: Escalating road protests starting with Twyford Down in 1992 and culminating with the Newbury bypass in 1996 (at which over 1,000 people were arrested). Over 300 road schemes were cancelled in November 1995In November 300 road schemes were cancelled and led to a cancellation of many road schemes by the new Labour government in 1997 until 2002 when they announced a new road building program.