There are pre-travel protocols to be followed. The travellers must ensure that they have a covid negative PCR report to furnish. You may encounter visa centre closure in many countries. It is advised to use a UK immigration ID checking app for all visa related documentation and biometrics scanning. All your family relations must prove to have enough finances to sustain themselves in the UK. They won’t be able to use public funds. Every traveller must prove their finances in the form of bank statements or salary slips. They must also prove that they are eligible to travel and hold a valid passport with blank pages. Your family or friends must also be able to furnish that once their 6 months of visa period is over they would be obliged to return to their home country. Read More: UK visitor visa for family and friends- All you need to know