Bloomberg Oct 2019:
"Oil industry trade groups and analysts were less concerned about disruption to fuel supplies."
“While pinch points have been identified, much of the fuel import infrastructure is dedicated and mitigation plans for the event of a ‘No-Deal’ Brexit have been made,” a U.K. Petroleum Industry Association spokesman said in a statement.“The lack of certainty of what day one looks like will mean the risk cannot be completely mitigated but as responsible operators, our members have been preparing for all eventualities to the best of their abilities.”
"Steve Sawyer, an analyst at consultant Facts Global Energy, also said he doubts that a no-deal Brexit would risk fuel supply."
“The only issue will be if extra checks and admin required slow up imports,” Sawyer said in response to emailed questions.“But then that’s what you have stocks for: to smooth out such disruptions until it all gets sorted out.”
Government's No-Deal Readiness Report pages 61/62:
•Supplies of crude oil, fuel, and important chemicals for refineries are expected to remain available through the UK’s diverse supply chains from Europe and the rest of the world.
Fuel is mainly imported through dedicated oil terminals away from the short straits, and most border and import processes will remain the same.
The Government has intensified preparations since 24 July 2019:
•The Government will continue to work closely with industry to ensure it develops appropriate plans for risks–for example, to safeguard the supply of reagents for refineries and fuel additives which come through ports.
•In the event that a risk to fuel supplies becomes material, the Government would:
○Activate the Downstream Oil Protocol, to strengthen coordination of industry contingency plans to improve the distribution of oil fuels.
○Make available to industry the Reserve Tanker Fleet of eighty vehicles to add capacity to the fuel distribution system.
assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/837632/No_deal_readiness_paper.PDF