I registered with Express months ago. Since then, they have put me forward for 1 job. That's it. Even then, I didn't get the job and the company it was with did not have a telephone number (sketchy, I know) so I rang Express and asked my advisor if he could find out why I didn't get the job. That was about 1/2 months ago and I still have not heard back from him.
They are the WORST temporary job agency going. All they want is to increase their numbers, they have no interest in helping you at all. If you're hoping to find a job, don't waste your time with them, go somewhere else!