UK jets have continued their second airstrike in Syria since MPs backed military action against so-called Islamic State in the country.
The Omar oil fields were targeted for the second time, using two Tornados and, for the first time, two Typhoons.
Defence Secretary Michael Fallon, who is visiting the British base for the Syria mission in Cyprus, said: “Last night saw the full force of the RAF.”
Four Tornado jets launched the first UK air strikes in Syria on Thursday.
Bombing began hours after MPs gave their backing for military action, with the oil fields, which are in eastern Syria, targeted.