The UK Government is set to introduce tougher measures and enforcement rules for travellers from Kenya into the UK. From 0400hrs UK time on 9 April 2021, visitors who have been or transited through Kenya in the previous 10 days will be refused entry into England.

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British, Irish and third-country nationals with residence rights arriving from these countries will be required to quarantine in a Government-approved facility for 10 days.
Quarantine package will include:
                                      📍assigned government transportation
                                       📍food and drinks
                                       📍accommodation in a government-approved facility
                                       📍security
                                       📍welfare
                                       📍testing on day 2 & 8

See here for full information:
https://www.gov.uk/foreign-travel-advice/kenya

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