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On the sign:
London Underground logo ELIZABETH LINE
Officially opened by Her Majesty The Queen on Tuesday 17 May 2022 during Her Majesty The Queens Platinum Jubilee
The sign is at Paddington station of the Elizabeth line - the London Underground line inaugurated in 2022.
As you can see, the symbol of the London Underground (roundel) appears on this line in a different color than the one on the other lines (see another sign on this line Click for sign's details)