"FlyerTalk's landmark thread "London Hiltons now requesting corporate ID if using codes" (2022-2023): "Just a word to the wise. London Hilton chains are now requesting corporate ID if you are using the discount codes." A second user confirmed: "I have been asked for Employment ID for the first time in London this year too, and multiple times so." The stated policy: "show a company ID card, or pay the full walk-up rate." Community-wide Hilton estimate: "hit or miss, about 20% of the time." UK/Europe properties have meaningfully tightened since 2022 — P&G's Hilton code N0000537, as a globally-used corporate code, is precisely the type flagged in London and other European cities."

"I have used heavily discounted corporate rates for many years all over London, and have not yet been asked for ID. If I was, all I could do would be to send an email from my work account which at least is clearly from the associated company."

"I would contact your corporate travel. I know some companies have one code for employee business travel and one for employees and their families. Some use just one for all. Shouldn't be too difficult to email to your travel team to get clarification."