Oil prices rose for a second day on Thursday, buoyed by a softer dollar and another attack on shipping near Yemen.
Brent crude futures rose 35 cents, or 0.4%, to $83.38 a barrel at 1036 GMT. U.S. West Texas Intermediate crude futures climbed 37 cents, or 0.5%, to $78.28 a barrel.
The dollar index slipped 0.3% to 103.66, supporting prices. A weaker dollar usually boosts oil prices, making it cheaper for buyers holding other currencies.
Union Jack Oil plc (LON:UJO) is an onshore oil and gas exploration company with a focus on drilling, development and investment opportunities in the United Kingdom hydrocarbon sector.