"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."

"Thanks for the prompt response. It's odd - the difference in the rate I booked and the next cheapest Hhonors rate was only £20! It just doesn't seem worth the effort of protecting even if I had, somehow acquired the code when I shouldn't have. Do please report back on your stay - will be interesting to note if you are also asked for some ID."

"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."