elisabeth smith get loads of work, they are always well represented at castings and jobs ive been to. If your friends kid didnt get the job from teh casting then that is not the agencies fault. They agency can only submit a child to the client and it is up to them to choose them. To be honest I have only ever seen one or two UA kids at castings since my DS has been doing this.
I think people should remember that with whoever they go with (as long as they are a legit agency!!) if the clients dont choose their kid it is not the agencies fault and you will always get parents that are going to be unhappy.
There are loads of great agencies and they all have over 200 kids on their books. There is only so much work out there so all those hundreds of kids across the UK cannot possibly be all working every month. THat is unrealistic to expect. It should be treated as a hobby and if you get work its a bonus. Thats what we did so I was under no illusions when we started this. He has had regular work, but we did have one time where we had nothing and no contact at all for nearly 4 months.