Had the benefit of this in DEL this weekend. Stuck at the end of the 100-yard queue just to get into the terminal building, I spotted a man going past with a sign saying "BA welcome Executive Club Gold/Silver, Club World, First passengers". Found where he'd put it down and the man in the BA hi-vis vest took me to the front of the terminal building queue, then to the front of the baggage screening queue, and then to the F checkin (Gold travelling in J).

He did ask for proof before providing this service... no support after check-in but I was so pleased to have avoided two long queues I didn't really mind. I didn't go from the lounge to the gate until called and since the flight was 45 minutes late there wasn't much of a queue at 3.45am. Only problem was the person at priority boarding at the gate who needed convincing that row 62 was Club since "all premium seats have low numbers"

Good to see the two extra flights too - my flights were overbooked both ways, was taken aside at checkin and offered a downgrade to "the best WT+ seat" for £200 cash or a £300 voucher which I should probably have taken but didn't think the cashback was worth it - much less than the margin between the fares. Considering all I was planning to do onboard was sleep, and I could still have got a decent breakfast at the Arrivals Lounge it would probably have been an easy £200...