I received a last minute request to meet with a client in London last week. Looking at Skycanner, it seemed that an EasyJet / BA combo from Edinburgh to Gatwick was the cheapest that matched the times I needed. There was a BA option (returning from Heathrow) for an extra £16, which seemed to make sense – my EasyJet Plus membership recently ran out and I expect I would have spent that much on Speedy Boarding.
I booked my flights with BA and added my Cathay Pacific Gold card details. This is One World Sapphire, which is equivalent to Silver Exec Club. I should have lounge access along with the ability to select my seats at the time of booking free of charge along with using business check-in counters.