I worked for BE for 2 years and I'm quite baffled by the above post.
The pay isn't amazing and you do work hard, but it is a good company with some fabulous people and I do miss it terribly. I work for a much larger airline now which pays less and you never fly with the same person twice so I can certainly appreciate the benefits of a smaller, friendlier airline!
You will do anything from 2 - 6 sectors a day on either the BAe 146 or the Dash 8. I believe that BE have ordered some RJs and a B737 as well so you will be on a mixture of a/c. You will probably get nightstops depending on where you are based so you can expect to take home anything between £1000-£1300 a month. I believe that the CA1s have also been given a pretty good pay rise too but again you'd have to ask a current BE employee.
My advice is go for it. You'll meet people who gripe and hate the company, but you will find that in EVERY airline. I loved my time at Flybe and I'm sure you will too. Feel free to PM me if you want any more info.
Good Luck!
KTP x