Upvote:-1
These documents are needed
If you are transiting, make sure transit visas are there, if applicable (esp Heathrow).
Upvote:1
To board the plane, you need to show a copy of the visa. The original visa should be deposited at the airport by the receiving party (there is desk for this in the arrivals hall).
You don't need a return ticket or hotel reservation.
On arrival, walk to the visa desk. Give the officer the copy of your visa, they will then confirm your arrival and hand you the original. Walk to the immigration counters and get stamped into the country.