Originally Posted by Prospero

While strictly speaking Gold Guest List (GGL) is not a tier in its own right, it is in essence an upper subset of Gold. GGL offers the usual benefits that come with oneworld Emerald plus several exclusive, value added baubles when flying on British Airways.

Entry and retention requirements: 
After accruing 3,000 Tier Points in two consecutive membership years or 5,000 Tier Points accrued in a single membership year. Note: from 08 April 2015, members will no longer be able to qualify by reaching 3,000 Tier Points in two consecutive years. For more information relating to this change, see http://www.flyertalk.com/forum/briti...-criteria.html