COP26 President Alok Sharma has admitted his regret over some of the issues facing people attempting to get into the climate conference in Glasgow.
Delegates have complained about the organisation of the United Nations summit which is being hosted by the UK Government.
Veterans of COP conferences have described it as the worst one they have been to in terms of organisation.
Thousands of people looking to enter the venue at the SEC have been forced to queue for over an hour to get past the tight security.
Concerns have been raised by health experts about the potential spread of covid due to the number of people heading to the summit every day.
During a press conference earlier today Sharma admitted there were "logistical issues" on entering the venue.
The Tory MP said: "This is a unique COP in quite extraordinary times, and I can tell you that the feedback I have had personally from minister and negotiators is that they do think that what the UK together with the UN have done is something really quite possible.
"Nevertheless, of course we regret any logistical issues that people feel are stopping them getting in.
"We are working to fix those.
"The first two days of COP has seen particular pressure on the number of people coming to the venue and we have seen some of that today.
"I hope that will settle over the next few days."
Earlier today Nicola Sturgeon's covid adviser Professor Devi Sridhar said it was "really concerning" to see huge queues of people waiting to get in.
The professor of global public health at the University of Edinburgh said seeing pictures of hundreds of people in close proximity has left her anxious knowing how "fragile" the situation has been.
Scotland's health secretary, Humza Yousaf, on Tuesday warned there are "early signs" that coronavirus case numbers could start to increase again and cited the summit as being one possible reason for this.
Asked about the queues at COP26, Professor Sridhar told BBC Good Morning Scotland: "It is really concerning, this week I have been quite anxious seeing all that and knowing how fragile the situation has been.
"We've controlled the situation for quite a long time. Can we control it even after this big gathering, that's the question.
"Will it lead to a spike, will it lead to a wave, will actually the mitigation measures have been enough?
"I know they thought a lot about making sure people were fully vaccinated, people were testing, it's a really tricky one because obviously this is the worst timing ever during a pandemic but at the same time I listened to those people who work in climate and they are saying now is the time, if not now we have an existential threat to humanity."
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