@matro87 not at all. I had heard such mixed reviews as to how employers think of the OU - with some saying it isn't respected as much and others saying it tends to impress employers that you can complete a degree alongside day-to-day life. I think it's luck of the draw depending on the employer to be honest! I was lucky in that I only found the latter attitudes in my interviews and I got the second job I interviewed for.
Like any degree I think it's dependent on the course too. You need to check it's a fully accredited and qualifying degree for the subject you're choosing. Mine was and I was asked that at interview. I had no issue registering at a different uni for my post grad course either (the OU don't offer the masters I need to do).
As far as I'm aware the OU don't require any pre existing qualifications but you might want to call student support there and talk it through with them to check. They're fab and really helpful.
If you're on a low income there's also some access modules you can do for free (you can pay if you aren't on a low income). They don't count towards your qualification but they're good to get back into studying and for giving you an idea of what will be involved. When I did it, doing the access module gave me a discount of about £2,000 off of my first module too.
It was genuinely the best thing I could have done for me. I went from a job on minimum wage in retail that I really wasn't happy in to one I love and that has the chance to progress. I would recommend it to anyone.
I would say though that there are difficult weeks. My son had an uncanny knack of getting ill whenever big assignments were due in so I'd be up all night with him laid on me trying to type one handed! You do have to really really want it and I was lucky that my family and friends were so supportive and kept me going.