If you are looking to earn commission quickly, you are deluded - hard work and momentum needs to be built. You will see the rewards but this takes time. Prepare yourself for 3 months of no commission and you will be rewarded with different incentives to fill the gap. (this is the same at any recruitment company, so work hard and you will get rewarded).
Lack of senior recruiters in Reading office (positive - good opportunity for someone to come in)
Business change - direction of organisation changed a lot when I was there, so would be good to see clear plan.
Long hours expected (Again this is at all recruitment companies) - If you aren't prepared to work the hours, then don't bother!