You can apply for a UK student visa via UCAS (University and College Admission Service).
You can use a single personal statement (500 words) for applying to 5 universities. UCAS respectively charges £20 and £25 for the applications to single and multiple universities.
Once you receive your CAS, you will need to pay £150 for health coverage.
Make sure you have all the documents ready while applying for the visa.
You can go through the step-by-step guide here: Apply for the UK student visa.