"Shell's Hilton code is confirmed in public Hilton code databases. Shell's London Centre is a major HQ, and UK Hilton properties have documented systematic ID verification since 2022. Singapore and other Asia-Pacific Hilton properties enforce verification near 100% of the time — Shell's major APAC presence makes this code higher risk internationally. Houston-area Hilton properties routinely encounter genuine Shell employees."

"I run a Consultancy and work with clients across both Public and Private sectors. Many years ago (15?) a UK Government client (they are still an active client) shared a Hilton Corporate Code, which was to be used for stays required when working with them. This code gives access to (but not 'On Duty' rates). I use this code regularly across the UK (mainly London) without issue, staying most months at various London Hiltons."

"Hilton and Marriott Japan actually do check to ensure you qualify for any special rates. They also scan your passport too just FYI. It's not the wild west out here. Be prepared to prove you are eligible for the code or have the rate switched if you can't. Hope you got a business card from your company."