Talkback: Plants for winter scent

I had the pleasure yesterday to walk through the Embankment Gardens in London and it's just amazing how much more advanced flowers and shrubs are in the city's micro-climate. Thousands of daffodils in bloom. I came across some Viburnum bodnantense also in bloom and the scent was like Lily-of-the-Valley. However the flowers were yellow and white. I wonder what they are called?