Originally Posted by corporate-wage-slave

There are two marketing strands here.

The oneworld benefit is for Emeralds only, without a guest. and at a handful of airports in the scheme, more details on their website. If it was the oneworld page you were looking at then that would explain it.

The BA benefit is for Silvers and includes one guest, at those airports that offer the service to BA's passengers - most of the usual suspects. There are details of this in the BA.com websiite area for Silver, and there is also a Fast Track inventory in the Dashboard.