The industrial action by construction maintenance workers at the 270,000 barrel per day (bpd) Pembroke oil refinery in Wales has caused delays to fuel distribution, two industry sources told Reuters last month.

In a rare move, Valero had been active in the Platts refined oil product trading window, bidding for jet fuel cargoes for delivery into Britain's Milford Haven port.

(Reporting by Shadia Nasralla; Editing by David Goodman)