Benidorm Bar
You'll find Benidorm Bar on Stanley Street in the city centre, promising sunny Spanish vibes without the flights. They host all sorts of karaoke events here, from private booths with an open bar to singing in front of a crowd at karaoke with Licky Vicky.
Tickets here are often free, and others start from as little as £3. Plus, you can enjoy all kinds of affordable drinks while you're here.