One common mistake is not checking the solicitor's credentials and specialisation in clinical negligence cases. Many individuals also overlook the importance of reading reviews or testimonials from past clients, which can provide insight into the solicitor's track record. Additionally, some may rush into a decision without considering whether they feel comfortable communicating with the solicitor. It's essential to choose a solicitor who is regulated by the Solicitors Regulation Authority (SRA) and has a proven history of success in similar cases. Always consider arranging a consultation to discuss your case before making a final choice.