LONDON, May 22 (Reuters) - Northwest European gasoline refinery margins rose by over $3 to $29.03 a barrel on Friday, boosted by lower inventories and brisk trading activity.

• About 20,000 metric tons of E5 gasoline barges traded in the Argus window as BP sold to TotalEnergies. BP also sold an E5 barge to Trafigura in the Platts afternoon window.

• A further 14,000 tons of E10 gasoline barges traded on an Argus basis, with Shell selling to Varo, Trafigura and ExxonMobil.

• Gasoline stocks held independently in the Amsterdam-Rotterdam-Antwerp refining and storage hub fell around 11% on the week, data from Dutch consultancy Insights Global showed, on a rise in exports and limited imports. ARA/

• China is expected to see only a slight uptick in refined fuel exports in June from May, three trade sources familiar with the matter said, as Beijing is set to maintain export curbs for a fourth month to safeguard domestic supply.

• Meanwhile, EU-27 and UK gasoline and blending component exports have averaged 763,000 barrels per day so far this month, compared with an average of 944,000 bpd in April, Kpler data showed.