Hi Claire, sorry for my delayed reply.

Here are the Listening and the Speaking scores from TOEIC test for the various levels:-

A1 = Listening - 60
Speaking - 50

A2 = Listening - 110
Speaking - 90

B1 = Listening - 275
Speaking - 120

B2 = Listening - 400
Speaking - 160

UKBA are only interested in Listening and Speaking scores.
Level A1 is the minimum needed for UK entry visa requirements and level B1 for ILR and Naturalisation.

Scores are not percentage they are 'raw scores' just as you get on your score report.

Hope that clarifies for you.