LONDON, May 28 (Reuters) - Northwest European gasoline refinery margins rose by about $2.50 a barrel to $23.78 a barrel on Thursday, supported by lower U.S. inventories and brisk trading activity, despite a rise in regional motor fuel inventories.

• About 35,000 metric tons of E5 gasoline barges traded in the Argus window as BP, Exxon Mobil and Trafigura sold to TotalEnergies, Gunvor and Varo.

• A further 4,000 tons of E10 gasoline barges traded with Exxon and Varo, which bought from Trafigura.

• Total oil product stocks held independently in the Amsterdam-Rotterdam-Antwerp refining and storage hub fell around 1% on the week to their lowest since November 2014, data from Dutch consultancy Insights Global showed on Thursday. ARA/

• Total stocks stood at 4.42 million metric tons and fell due to a drop in all product stocks except for gasoline.

• Gasoline stocks rose 7.5% to 1.11 million tons as blending activity in the region picked up, Insights Global's Lars van Wageningen said.

• U.S. gasoline stocks USOILG=ECI fell by 2.6 million barrels last week to 211.6 million barrels, the Energy Information Administration said, compared with analysts' expectation in a Reuters poll for a 2.41 million-barrel draw.​

• Meanwhile, EU-27 and UK gasoline and blending component exports have averaged 804,600 barrels per day so far this month, compared with an average of 955,000 bpd in April, Kpler data showed.