@Soccermumamir, lots of healthcare students work alongside their studies. Mostly in healthcare support/ healthcare assistant roles on the bank/NHSP (the NHS temp staffing agency where you pick up shifts as and when). NHSP like healthcare students because they know what they are doing and are usually pretty conscientious and students like NHSP because they can earn money ad-hoc around their studies, practice and hone their fundamental and clinical skills communication skills, gain experience of clinical areas that they might like to work in post-registration (or learn which areas are definitely not for them). It's also a good opportunity to get to know people and build relationships in the job.
That said, healthcare courses are much more 'full time' than standard university degrees and if you do have caring responsibilities, working outside of the home might not be possible. There's a lot more contact time (time spent 'in class') than in non-healthcare courses but there is still an expectation that you will spend several hours a week outside of the classroom, pre-reading, doing assignments, group work etc.
Some universities are better than others at balancing the needs of mature students with caring responsibilities with the realities of meeting the NMC's (or relevant regulatory body's) requirements for registration. I would say that it is really worth seeking out a course with a large mature student intake and speak to students on the specific course about how they find it. The university with the right pastoral fit might not be the one flying highest in the league tables, but that doesn't really matter in nursing/midwifery.
As for placements, it depends on your university choice and where it is. Some universities are able to offer the variety of placements required for registration within a short distance, others need to cast the net wider. Rural uni's tend to have larger placement catchments for obvious reasons. These are the sorts of questions you should be asking at open days (which NHS Trusts do you place students in?).
I wouldn't advise starting a healthcare course without pretty bombproof childcare in place. Obviously there will be some issues along the way, nothing is totally bombproof, but going in as well prepared as you can possibly be on the childcare side of things is only going to benefit you.
If shift work is really a problem, look into some of the more 9-5 NHS specialities, e.g. speech & language therapy, occupational therapy, dietetics.