Complex sentence: Their Roads Campaign is led Rebecca Lush Blum who founded Road Alert! in about 1990 in response to the Conservatives'Roads to Prosperity' which proposed some 200 road schemes and who was jailed in 1993 during the Twyford Down protest.
Split into simpler sentences: Their Roads Campaign is led Rebecca Lush Blum who founded Road Alert! in about 1990 in response to the Conservatives Roads to Prosperity' which proposed some 200 road schemes. Blum was jailed in 1993 during the Twyford Down protest.