Over the moon to have passed mod2 today, on second attempt. First attempt was at Exeter test center. I was due to pass but at the last minute failed. Approaching a roundabout which I wasn't familiar with. Instruction was 'cross roundabout 2nd exit towards Marsh Barton'. I was in left lane, quite happy until I saw a left only pointing arrow in my lane. I thought oh oh, best get into the right hand lane, which had a straight ahead arrow and right arrow. Manouver was done safely. I went straight ahead, second exit as asked. I failed for failing to follow signposts, which I was a bit miffed at