I have a small luxury car washing business and it is doing quite well so I'm thinking of opening a second location so if anyone has any articles/ blogs i can read on expanding small business that would be a massive help thanks  

Is there anything more specific you're looking for beyond just expansion? If you simply want a read you could try https://medium.com/ to comb through or https://blog.i24app.com/ for business/finance. Hope any of this helps but I don't know what you truly need to help you expand, maybe seek an appointment with your accountant..