As from 12 December 2014 New Look Food & Drink Labels have been introduced across Europe. www.fdf.org.uk/news.aspx?article=7105
Among other changes, the specific types of vegetable oils that are contained within a food or drink should now appear in the ingredients list, so it should be obvious what kind of oil you are buying.
People eating and drinking on the go
To think that London, or anywhere else for that matter, does not belong to any one demographic