I guess it depends what you mean by "socialist" - Labour created the NHS and nationalised some of the key heavy industries of the time (coal, steel, electricity):
Turns out that the NHS was a good idea and the nationalising of industries was a bad idea!
Of course, when Labour re-invented itself in the 1990s as "New Labour" they pretty much became "Conservative-Lite" - I'm still not sure what values they actually have.
For once, the Swedish politics is more interesting! Well, at least if you enjoy sick humor.
The Swedish (ex-)communists became feminists and anti-racists (they argue for something called "structural racism" that native Swedes are guilty of to immigrants -- never with references to non-extremist sources).
In short, just the normal marxism, but another group than "workers" to create conflicts around.
This wouldn't be more than a detail, but the left wing extremists has a big, big representation in the journalist profession since the early 70s. You find lots of left wing academics saying weird stuff in the media, without being identified as e.g. extremist ex-mental patients (Hübinette) or anarchists which wrote admiringly about Ghadaffi (Gardell), etc.
http://www.historylearningsite.co.uk/labour_party_nationalis...
Turns out that the NHS was a good idea and the nationalising of industries was a bad idea!
Of course, when Labour re-invented itself in the 1990s as "New Labour" they pretty much became "Conservative-Lite" - I'm still not sure what values they actually have.