It comes following the launch of coronavirus test trials at Heathrow Airport, which could see the quarantine period being reduced for arrivals into the UK.
Posting to Twitter, Mr Charles said: “There’s plenty of potential to open up more travel corridors when combined with a shorter quarantine period after re-entering the #UK and then a negative test result.”
”At present, winter sun countries such as the Maldives, St Lucia, Seychelles and Barbados are currently on the travel corridor list.
However, Mr Charles suggests more options may be to come.
READ MORE: Full list of safest quarantine-free winter sun & snow destinations
Despite this, quarantine remains mandatory for travellers returning from the UAE.
In a second tweet, the travel expert explained: “Our understanding of new UK criteria have pushed more countries out of the red zone for quarantine.”
Despite this, some countries remain firmly in the “red zone”.
“#Czech and #Belgium are among the highest 14-day case rates in the world.
The #USA is way below the infection rates now being seen in #Europe,” Mr Charles added.
However, there are some countries currently in the “green zone” which still require holidaymakers to quarantine on arrival back into the UK.
These include Canada, South Africa, Turkey and Jamaica.
Jamaica is the lowest of these, with just 33.8 confirmed cases of coronavirus in the last 14-days cumulative.
The new changes have sparked hope that the nation could be next to earn a travel corridor.
One Twitter user wrote: “Jamaica has to be first in line to be added the FCO exempt list this week surely! Even if the threshold was still 20, let alone 100!”
A second added: “Just spoke to my travel agent independent who says she believes November will go ahead so fingers crossed some changes confirmed this week.”
The Government has made no official announcement regarding the threshold change or any changes to the current travel corridor list.
However, updates are announced on Thursdays, with more changes anticipated this week.