Complex sentence: Other residents at RAF Wyton were 100 Sqn with a mixture of Canberra types in the Targeting Role also resident but "never officially present" were the three Nimrod R1s belonging to 51 Sqn used in the Elint and Sigint role.
Split into simpler sentences: Other residents at RAF Wyton were 100 Sqn with a mixture of Canberra types in the Targeting Role. Also resident but "never officially present" were the three Nimrod R1s belonging to 51 Sqn used in the Elint and Sigint role.