Markets also gained amid investor expectations of a positive outcome from the upcoming ECB meeting.
Brent, WTI rally comes to an end after survey reveals Opec pumped 34.16m bpd in November.
CMC Markets and IG Group drag FTSE 250 lower as market factors in prospect of restrictions on spread-betting companies.
Euro pulls back from two-week high it touched in the previous session amid fallout from Italian referendum.
Neither Opec nor US shale producers could land a winning blow in the fight for oil market dominance.
US services sector activity hitting a one-year high in November also helped boost investor confidence.
Brent caps $55 per barrel mark for first time in 16 months on Opec's decision to reduce its 2017 output.
The pollsters called Italian referendum correctly allowing traders to price in the country's vote against reform.
Euro had plunged to lowest level since March 2015 following news Italian Prime Minister Renzi will step down.
Shares in Italian banks plunge as sector fears referendum outcome could halt recapitalisation plans.
Prime Minister Matteo Renzi announced his resignation soon after results indicated his defeat.
The euro dropped to a 20-month low against the dollar as S&P 500 e-mini futures were also down.
Brent, WTI extend positions above $50 as market awaits Opec-Russia talks.
Traders look ahead to Italy's reform referendum on Sunday and hope it will not spark market panic next week.
Dollar edges higher against the euro after unemployment rate hits nine-year low in November.
The bearish trend in the stock markets also follows a decline in oil prices.
Co-owners of this project include BHP Billiton and Union Oil Company of California, an affiliate of Chevron.
Brent touches $54 per barrel as Opec announces it would cut production by 1.2m barrels per day
Pound climbs above €1.19 after Brexit Secretary David Davis says Britain could pay to retain access to single market.
On Wednesday, Opec agreed to cut oil production by 1.2 million barrels per day.
Oil cartel Opec agrees to first cut in production in eight years as it bids to boost prices.
Brent, WTI trade higher following agreement in Vienna to cut Opec production in conjunction with Russia
Euro trades mixed after Eurozone inflation rises in line with expectations to hit the highest level in over two years.
Brent, WTI futures spike as market prices in a production cut by Opec on positive ministerial soundbites.
Suhail Al Mazroui tells IBTimes UK that Opec was working 'overtime' towards an oil market solution.
Most analysts said they expect some form of deal to emerge from the Opec meeting.
Fears of oil sliding to $40 escalate as preliminary Opec talks yield little, while Russians pull out of talks.
Euro on the back foot as analysts warn Italian referendum could spark volatility in the markets.
Kremlin decides against talks with Opec while cartel's internal meeting of experts ends without concrete plans for an oil production cut
The markets are awaiting the outcome of Opec ministers' meeting to work out a production cut.