Any sensible employer won't care where you got your degree. A 2.1 degree (for example) should be of equal standard irrespective of whether it's from a former polytechnic or Oxbridge. Neither should it matter whether it's labelled BA, BSc, BEd or whatever.
However, there are still many ill-informed people who seem to think that one degree is superior to another. (I find it particularly annoying that some people don't count my BEd degree in 'mathematics as a double subject' as a 'proper degree'. I took exactly the same examination papers as the BSc maths students at the same university, with exactly the same assessment criteria but, somehow 'BEd' doesn't have a ring of authenticity to it).
For what it's worth, nearly all of the employers I've met, who do apply a (non-valid) ranking system, rate university degrees thus:
Lowest of the low: Any (recent) ex-polytechnic (e.g. East London)
Not much better: Plate glass universities (e.g East Anglia)
More acceptable: Red brick & civic universities (e.g. Sheffield and Southampton)
Joint second: Oxford & Cambride
Top of the tree: The OU.
The position of the OU is probably the only one which has any real justification in that list. I've never met any employer (whether or not they apply a ranking system to other universities) who doesn't rate an OU degree as a more impressive qualification than any other degree. That's simply because of the effort and dedication which is required for someone to obtain an OU degree, at a time in their life when they probably have many other commitments.
Chris