Originally Posted by YuropFlyer

Your flight from London will most probably arrive at the new D gates, your flight to DEL leave from the (relatively) new E gates, both Non-Schengen area. There should be also no security screening, giving you plenty of time. You'll have to walk a few metres from the D gates to the Heidi train which will bring you to the E gates, but that's less than 10 minutes. If your arriving flight is on time, and you hold *G status, I would visit the Swiss SEN lounge @ D gates for a quick visit, then go to the E gates and visit the lounge there (it's less good than the SEN lounge, but offers a nice view). If you've less than 50 minutes till departure when arriving, head directly to the E gates.