Transport for London.
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The no smoking logo is simply a picture of a cigarette in a red circle with a red line through it. Sometimes just the words 'No Smoking' are used on a sign instead of the logo.
It looks like a straight central line going over a circle line, a small part of the map of the Underground.
Airwalk's logo is a white tent in a red circle.
The Expedia logo has a blue circle and yellow airplane.
The company that has a red circle logo with a white R in it is Rossignol
Evian
the answer for the woman in the circle in versace
olympic logo