I often see people asking about British Airways' 'You First'. Head For Points tries to provide answers in the article below:

https://www.headforpoints.com/2023/0...ays-you-first/

“You First” is a dedicated call centre set up to help anyone holding a British Airways First Class ticket. Not many people know it exists, which is a shame because – irrespective of the wait times at the main British Airways call centre – telephone calls to “You First” are generally answered quickly."