The role of vaccine passports in the sector was called into question over the weekend when a leaked letter from government lawyers stated that "no final policy decision" had been taken concerning nightclubs.
It had been expected that nightclubs would require the passes from the end of September.
A government spokesman insisted that the government was "planning to make full vaccination the condition of entry to nightclubs”, despite the letter.
Michael Kill, chief executive of the Night Time Industries Association, said: “Covid passports have presented many businesses with logistical, discriminative and ethical challenges, all of which will have an effect on trade and will present further staffing issues.
“It seems undemocratic that the government [is] using access to contemporary culture as a route to driving people to become vaccinated.”
In France, the vaccine passport programme has been in place since 9 August, with polls indicating that the majority of French people support the health pass. People without a pass where it is required risk a fine of €135.
Objections were raised by hospitality unions, with the government agreeing that venues be allowed to check passes but not confirm identities.
New York has a similar system in place for hospitality venues.