Original sentence: The far left in Britain, while supporting the democratic, working-class anti-occupation movement in Iraq, contains positions which have ranged from groups including the Socialist Workers Party (Britain) and Workers Power that take a similar line to the ISO as mentioned above, to the Alliance for Workers Liberty (which identifies with the third camp tradition within Trotskyism) which opposes the insurgency
Edited sentence: In Britain, positions have ranged from groups including the Socialist Workers Party (Britain) and Workers Power that take a similar line to the ISO as mentioned above, to groups such as the Alliance for Workers Liberty (who identify with the third camp tradition within Trotskyism) which opposes the insurgency, while supporting the democratic, working-class anti-occupation movement in Iraq