After the changes made to the red, amber and green lists for travel to the UK on the 5th August, it has become clear that there is no indicator or reason for why one country is on a red list and another is on the amber list. 

Strange examples include India being moved to the amber list despite it having more cases per 100,000 people than Pakistan (which remains on the red list)

We ask for a clear set of guidelines to be laid out for when and why a country moves from amber to red or vice versa. This could use case numbers per 100,000, deaths per 100,000 or new variant risk as metrics.

For example Germany has a similar structure but with much clearer guidelines, 
High-risk areas in Germany can be regions with especially high numbers of cases, e.g. a factor of the average seven-day incidence rate per 100,000 inhabitants in Germany. A regular indicator is having a seven-day incidence rate of considerably over 100.

This would allow people to anticipate when a travel destination may turn red or amber and give everyone a sense of fair justification that the decisions are being made in the best interests of public health.