Complex sentence: When Epping Forest was first created, it was instinctively more pro-Conservative than the old Epping seat, as it lost the new town of Harlow (inside the old Epping Rural District) and gained the less pro-Labour Chigwell Urban District.
Split into simpler sentences: When Epping Forest was first created, it was instinctively more pro-Conservative than the old Epping seat. As it lost the new town of Harlow (inside the old Epping Rural District) and gained the less pro-Labour Chigwell Urban District.