Complex sentence: Subsequently he was a French teacher at Manchester Grammar School, then lecturer at Leicester Polytechnic, and the co-translator along with Anthea Bell of the world famous Asterix comic books written by René Goscinny and illustrated by Albert Uderzo.
Split into simpler sentences: Subsequently he was a French teacher at Manchester Grammar School, then a lecturer at Leicester Polytechnic. During this time, he and Anthea Bell con-translated the world famous Asterix comic books, which were written by René Goscinny and illustrated by Albert Uderzo.