Eurostar UK site is still showing one-way restricted fares for £44 London-Paris. Availability is restricted to early morning and late afternoon/evening departures. There is no need to log-in.

The Eurostar Belgian/Netherlands/German sites used to sell discounted one-way tickets in Leisure Select. London-Brussels used to be 80€ and London-Paris 95€. This is no longer possible and discounted one-way tickets in Leisure Select are no longer sold on any of Eurostar's European sites.