The Petrol Retailers Association (PRA), which represents petrol station operators across the UK, said that some sites across the UK were seeing delivery delays, but that they were largely confined to London and the South-East, and were 'temporary by nature'.

"However, it is important that consumers contact Trading Standards via the Citizens Advice Consumer Helpline if they are concerned about misleading green claims, so that these claims can be investigated and the appropriate action taken, whether that be advising the...

"Pretty much we are all back at work, because I think that's what we need to be in our particular industry," he says. "Obviously it varies from industry to industry, but in financial services it's more important to be in the office because its a very live industry".