Complex sentence: However, his claims were ridiculed by the "Yes" campaign, both by ministers, such as Roy Jenkins and newspapers, the Daily Mirror labelling him the "Minister of Fear" and other newspapers similarly derisive.
Split into simpler sentences: However, his claims were ridiculed by the "Yes" campaign, both by ministers, such as Roy Jenkins. The Daily Mirror labelled Benn the "Minister of Fear" and other newspapers similarly derisive.