The Open University Programme is work-based and is only suitable for you if you are already in employment in social care. (All degree students have to complete 200 days of skills development and supervised practice in a work setting, so it would be impossible to complete the award entirely on a part-time, distance learning basis and without an employer's support.)
If you are not currently working, or you're working in a different field altogether, then you might want to seek a Social Work Traineeship (some may be open only to graduates) or try to obtain a job as an unqualified worker such as a Social Work Assistant or support worker. It would be very important to discuss your training options at your job interview, as some posts may be designated for Social Work training and some not, and some employers may have arrangements to second staff to local universities.
If you are planning to seek employment and you do not already have a relevant higher education qualification (which may entitle you to apply for credit transfer), one way forward might be to study the Certificate in Health and Social Care (S31) independently as a first step. It is a foundation qualification designed to give you a good grounding in health and social care issues as well as help you to develop your study skills. It will enable you to demonstrate to employers your commitment and ability in this area of work. It may also help you to decide whether a Social Work course and open learning are right for you. The 60 credits you gain can be counted towards the degree in Social Work or an OU BA/BSc Honours Degree.
Register for the Certificate in Health and Social Care
The alternative to a work-based route is to find out about full- or part-time undergraduate courses available from your local university and apply through the UCAS system.