In Southbank Centre's Food Market there is a wonderful stall called Chocofruit. They cover pieces of fruit with delicious melted chocolate. You can add extras including marshmallows and chocolate balls.
We tried a whole banana covered in light, dark and white chocolate. Combined with mixed chocoballs, marshmallows, almond crunch and smarties. The melted Belgium chocolate went so well with the fruit - it was delicious! Plus the chocolate marble effect looked awesome!