Travelling to the UK by boat? Stena Line is probably the most well known company that lets you make the trip. I tried the top 20 results in Google to find a working 'offer code', and unfortunately the results were not good.
When you go to make a booking on stenaline.co.uk you will see this at the end of the first page:
If you are like me, you will waste the next 10 minutes looking for a code online! Well I spent a bit more than that, and unfortunately could not find anything that works.
As of February 2025, there is one code 'NEWYEAR25' which gives 20% off on certain routes. We will keep this page updated if we find another working code.