William Hague has insisted the UK remains "fully behind" the Syrian opposition after holding talks with its leader in London.
The Foreign Secretary and Syrian National Coalition president Ahmad Al-Jarba discussed ways Britain could provide "further non-lethal support" for the struggle against Bashar Assad's regime.
"President Al-Jarba and the people of Syria should be in no doubt that the UK stands fully behind the Syrian National opposition - the sole legitimate representatives of the Syrian people," Mr Hague said after the talks. "They are the best possible hope for a political solution to the crisis and for a future Syria which is stable and democratic.
"The UK will continue to lead international efforts to provide humanitarian assistance to the now two million refugees who have fled Syria and the four million who have been forced from their homes. We are working closely with the moderate opposition to alleviate this appalling suffering and to provide practical and political support."
Mr Hague reiterated to Mr Al-Jarba that the UK was "absolutely opposed to any use of chemical weapons", and confirmed that a consignment of protective equipment had arrived in the country.
"We also discussed ways the UK could provide further non-lethal support to the opposition to help save lives and alleviate humanitarian suffering," he said. "The UK's priority remains a political solution to the crisis in Syria. Achieving lasting peace in Syria will require a government that represents the needs and concerns of all the Syrian people. The UK is working closely with international partners and the National Coalition to help make this a reality."
UK involvement in military reprisals against Assad was ruled out after David Cameron suffered a surprise defeat in the Commons last week.
However, the Prime Minister has said he will still make the case at the G20 summit in Russia for a robust international response to the use of chemical weapons.