The London arrivals lounge is such an excellent perk of flying Polaris that I'm surprised other major UA international destinations don't offer one. Perhaps London is the only place where enough overnight flights land in the AM, with enough passengers having it as their final destination to make it worth it. I flew back CPT-IAD and had to be at a meeting 3 hours later last year, and I paid almost $200 to a nearby Marriott for the privilege of a shower and a clothing iron. I almost bought a throwaway ticket to EWR to use the polaris lounge, but it wouldn't work with a checked bag, as I didn't want it through checked and it wouldn't be permitted through the TSA checkpoint.