Note that these sale fares are available exLON until Tuesday 4th June, but there are some excellent exEU Sale fares which became available a few days ago.
For instance this one from Sweden with up to 20% off and some excellent deals if you hunt around:
…most of these exEU deals end up the same or more than an exLON sale fare, once you take into account the cost of getting to and from the point of departure and add a nominal sum for the “hassle factor” but still worthwhile, especially if you need a few extra tier points for “free”.
If you’re in Stockholm, check out the new ABBA museum:
…or venture further afield for a night at the Tree Hotel: