I did health and social care, psychology and applied law, which I’ve personally thought was a great combo. I didn’t like the idea of sociology, and wanted to have a mix of btecs and a levels. My only thing is I wish I had the option to do philosophy, ethics and religious studies instead of law- but I don’t regret law at all.
It’s quite lucky with social work there are no specific entry requirements subject wise- EXCEPT, in your interviews you need a broad, detailed and practical knowledge about a lot of info re working in social care, social work, professional regulatory bodies and their purposes, case studies etc.
I really relied on HSC for my social work interview- you can’t get much more of a relevant course at a level- and it is so so incredibly easy (in comparison to other subjects). You said you wanted to do HSC- if I was you, do that, and then pick 2 you love/ find interesting in general- as HSC is more than suffice to demonstrate the majority of the background info you need before research for social work interviews.
Consider if you want a bachelors or masters in social work. If you want a masters, and do an undergrad in something else first e.g., psychology, b at in mind that in your subject choices too- as it’s not recommended to do both a masters and bachelors in social work due to repetitiveness and lack of significant gain.
Hope this helps