petrol

Lukoil is the dominant force in Bulgaria's wholesale fuel market as well as in sales to end-customers owing to its large network of petrol stations.

All new cars will have to be electric or hybrid from 2030, when a ban on the sale of new petrol and diesel cars comes into force.

A number of country delegations were forced to take shelter outside under the roof of a petrol station, a member of the UK delegation told the BBC.

"You either need to pour petrol inside or throw a few Molotov cocktails inside," the account advised.

A Treasury spokesperson said: "Fuel duty covers petrol and diesel, but there's no equivalent for electric vehicles. We want a fairer system for all drivers."