This includes Autonomist and regionalist parties.
List of Regions and Parties:
Asturias: Asturias Forum
Aragon: Aragonese Union
Basque Country: Amaiur, Basque Nationalist Party
Catalonia: Convergence and Union, Initiative for Catalonia Greens, Republican Left of Catalonia
Galicia: Galician Nationalist Bloc
Navarre(Spanish):Navarrese People’s Union
Navarre(Basque): Amaiur, Geroa Bai
Valencia: Commitment Coalition (Edit)
Scotland: Scottish National Party
Wales: Plaid Cymru
Northern Ireland: Social Democratic and Labour Party, Sinn Fein
Flanders: New Flemish Alliance, Flemish Interest
Friesland: Frisian National Party
Szekelyland: Democratic Union of Hungarians in Romania
South Tyrol: South Tyrolean People’s Party
Aosta Valley: Aosta Valley Coalition, Edelweiss, Valdostan Union
Trentino: Trentino Tyrolean Autonomist Party, Union for Trentino
Padania: Lega Nord
If you think there is anything wrong with this map, feel free to constructively criticize, or change it yourself. I made of the Nomenclature of Territorial Units for Statistics, or NUTS map, on the second level, found here.
I included Autonomist and Regionalist Parties, as an autonomous area is still somewhat separate. Autonomy can also be a first step towards independence, as well. Sorry for any confusion.
A more accurate name for this might be “Map of Separatist, Autonomist and Regionalist regions in the EU, which have Separatists, Autonomists, and/or Regionalists in the National Legislature”
For the parties themselves I just used the Wikipedia pages of the Legislatures.
Map that includes only secessionists :http://i.imgur.com/Qm6JoGp.png