The Government has warned Brits travelling to Qatar for the World Cup to "steer clear of drugs" and to look up the country's alcohol laws before travelling.
Football fans should know that being caught with even "residual amounts" of illegal substances can result in "lengthy custodial sentences", the Foreign Office said on Thursday.
Under Qatari law visitors can also face fines of up to £50,000 if found with drugs, while drug trafficking can result in the death penalty.
Regulations also only allow residents to buy and consume alcohol with a permit.
Issuing six tips to football fans, the Foreign Office said they should prepare before they go and follow the entry requirements for Qatar, which include having a form of fan ID known as a Hayya Card and proof of a negative Covid-19 test.
It added: "Qatari laws and customs are very different to those in the UK.
"There may be serious penalties for doing something that is not an offence in the UK. The availability of alcohol, and associated laws, will be different to previous tournaments.
"Qatar takes a zero tolerance approach and visitors can expect a severe penalty for the possession of even residual amounts."
Accommodation must also have be arranged before travelling out."
Foreign Secretary James Cleverly said: “The countdown to the World Cup is on, with only a month to go until the action kicks off in Qatar.
“We want all travelling Brits to enjoy their World Cup experience, and they are more likely to do so if they prepare before they go."
England Manager, Gareth Southgate, said: "I know how much our fans look forward to watching England at major tournaments.
“With only one month to go, I would suggest anyone travelling to the World Cup signs up for the UK Government’s travel alerts.
“As well as keeping them across all the information they need, they will get important tips too for getting the most out of following England away. We look forward to seeing them all at the finals.”