Blimey! Even more wicked sounding island in The Med! (7)
I believe the answer is:
corsica
'island in the med' is the definition.
(I've seen this before)
'blimey even more' is the wordplay.
'blimey' becomes 'cor' (I've seen this in other clues).
'even more' becomes 'sica' (I can't explain this - if you can you should give a lot more credence to this answer).
'cor'+'sica'='CORSICA'
'wicked sounding' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for corsica that I've seen before include "French territory" , "Napoleon Bonaparte was born on this French island" , "Napoleon's island birthplace" , "Mediterranean island, birthplace of Napoleon" , "Island of W Italy, capital Ajaccio" .)