Enroll at this link for instant Gold status in Virgin Atlantic’s Flying Club.
Benefits of Gold, Virgin Atlantic’s top tier, are detailed here. Basically benefits apply primarily when actually flying Virgin — bonus miles, lounge access and priority checkin even when flying economy, extra baggage, and Heathrow fast track. You can also nominate a Silver. And there are reciprocal benefits with Virgin Blue, VAustralia, ANA, and Singapore.
This puppy won’t last long. I believe it’s intended to incentivize folks buying higher-priced business class transatlantic fares, who already have status in another program, but was made available to all comers.