If you want to end up with chartered status, life is a lot easier if you have an MEng... having said that, if you're on a BEng, it is often easy to switch up to the MEng and if you're on a MEng and don't do well enough they'll transfer you to BEng anyway.
The other thing to think about is that even if your course doesn't have a Year in Industry included, if you ask about doing one they will often support you.
This is only what I have gathered from applying and offer-holder days as I am currently taking a year out working in industry before I start at university. I currently hold an unconditional for a BEng but have every intention of attempting to end up with an MEng.