"Siemens has multiple Hilton codes (D323009803, 323009803, N0079268, 302844100) reflecting different business units and tiers. hotelcorporatecodes.com notes Siemens in the "Sometimes" category at Hilton. UK/Europe Hilton properties have increased enforcement since 2022 — Siemens has major Munich HQ operations where Hilton properties regularly encounter Siemens employees. FlyerTalk's London Hilton enforcement thread documented: "show a company ID card, or pay the full walk-up rate." German Marriott properties near Siemens facilities: medium-high risk."

"I've only ever been asked about it once and I basically said "Yes I work there" and there were no follow up questions. That was on a personal trip but booked through the portal Hilton set up that allows employees to book personal travel using the corporate rate."

"I have been asked for Employment ID for the first time in London this year too, and multiple times so. Not had that in years."