There is large population of them in the area where I live in. Over the years I have done business with a lot of them, they are very much into working for themselves as opposed to working for non Brethren employers.
Geez I thought we had it hard been jdubs, it is nothing compared to what a Exclusive Brethren must do or not do. I did some research on their beliefs some time ago and also spoke to a couple of ex Brethren, here is some examples of their rules.
The women are forbidden to ever cut or colour their hair, they are not allowed to wear any form of makeup, are not permitted to wear shorts or trousers and dresses must be worn below the knee.. They are forbidden to wear swimmers, therefore they never go swimming. The men must be clean shaven, no beards allowed (sounds familiar), men are never allowed to wear shorts or show their legs in public.
Other items they are banned from using are, faxes, computers, mobile phones, radio, television (not even educational documentry's), videos, dvds. They will not share a meal with non Brethren, will not vote, do not celebrate Christmas, Easter or birthdays. Children will not play in sport outside school. In our area they attend meetings every single week night, two on Saturday and three on Sunday that's ten meetings a week!!
There belief is that all loyal Brethren will have a special favoured position in heaven by christ's side.They teach that other christians may also go to heaven but will reside in a lower level under their control. When it comes to being self righteous, believe me not even the jdubs come close to this mob. What I have never been able to understand is that while they will go and stand on the street corner and preach out loud their message you can never join this mob you must be born into it, such love they show. This probably explains why they have a such a high number of children with mental and physical deformities as they have been inbreeding for such a long time.
So would I describe them as a cult, you bet I do. In fact I believe they are even worse then the jdubs in not allowing their children to have any freedom of thought at all. I really feel pity for the kids. They have more man made rules then the jdubs and frankly most of the rules are insane and you could never prove them from the bible.