"Siemens Premium Hilton code (N0079268) is a higher-tier Siemens corporate code at Hilton. FlyerTalk's "London Hiltons now requesting corporate ID if using codes" thread specifically documented systematic enforcement for premium-tier corporate codes. Siemens' Munich and London presence means premium Hilton properties in those markets (Hilton Munich, Conrad London) encounter Siemens employees regularly. The "Premium" designation suggests deeper discounts, which correlates with higher enforcement probability."

"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."

"I have used my corporate code multiple times and never once have I been asked for an ID."