Yes, you can access NHS services for pre-existing conditions. The NHS does not discriminate against patients based on their health history, and you are entitled to receive necessary treatments and care for any existing conditions you may have. When seeking NHS services, it's essential to inform your healthcare provider about your pre-existing conditions during consultations. This information helps them provide you with appropriate care and tailor treatments to your specific needs. Remember, your health is a priority, and the NHS is here to support you.