When you are out there looking for an umbrella company to find contractors, you need to be very careful. You would not to do business with a company that does not practice the business ethics. Apart from that, working with a company with poor record will not be a great idea. Similarly, you should avoid the companies that do not process the payments on time even after the timesheets are submitted well on time.
In order to find an umbrella company with the right professional attitude, you need to do some research. If you are expecting that you will simply work with anyone and will find everything to be great there, then you are dreaming. The situation out there is not great and you have to be aware of that. With so many umbrella companies around these days, you have to be a little extra careful before doing any businesses with them.