Bombing oilfields in eastern Syria was an attempt to hit so-called Islamic State's revenue stream, but it was also a static, guaranteed target for Britain's first mission over the country.
It is hoped the strikes will stop the production of oil that funds IS, as ITV News correspondent Emma Murphy reports.
The shadow chancellor warned it could foster another generation of militants determined to commit a Paris-style terror attack.
The Defence Secretary has warned the RAF that the fight against Islamic State will not be short or simple.
Officers were posted outside the constituency office of Neil Coyle, the Labour MP for Bermondsey & Old Southwark.