Originally Posted by hybridace101

Hi there! I am planning to travel London-Paris-Amsterdam-UK in a couple of months time. It turns out that a return Eurostar ticket between London and Paris is only slightly more expensive (£2 more) than a single ticket at my desired time. I decided to travel one-way on Eurostar because I already have transport arrangements to take me back to the UK from Amsterdam.

Scenario 1 (Eurostar return):
London-Paris-London - £58
Amsterdam-Paris (to catch return Eurostar journey) - £24
London-final UK destination - £22
ESTIMATED COST: £104

Scenario 2 (Eurostar single + airline back to UK):
London-Paris - £67
Amsterdam-Final UK Destination - £37
ESTIMATED COST: £104

Scenario 3 (Eurostar 'return' + airline back to UK):
Eurostar 'return' ticket - £58 (including the leg I won't take)
Amsterdam-Final UK Destination - £37
ESTIMATED COST: £95

Here's my question: If I decide to take scenario 3, i.e. not to take the return Eurostar train, will it be a problem for me if I wish to make a future booking with them? A non-refundable ticket shouldn't be an issue given that the price differential between the one-way and return ticket is small.