Background: Vulnerable patients from marginalized groups (e.g., people with disabilities, people experiencing homelessness, black and minority ethnic communities) experience higher rates of ill-health, inequitable access to healthcare and low engagement with screening services. Addressing these disparities and ensuring healthcare provision is impartial and fair is a priority for the United Kingdom (UK) healthcare system. Aim: Using Levesque’s access conceptual framework, this study explored the views of patients from marginalized groups, specifically on how access to pharmacy services could be improved and their experiences of receiving a medication review service. Method: Qualitative data were collected via semi-structured interviews on patient experiences of pharmacy services and how access to these could be improved (n = 10). Interviews of patients who had received a medication review from their pharmacist were also conducted (n = 10). Using an interpretivist approach, five ‘demand-side’ dimensions of Levesque’s access conceptual framework were explored (ability to perceive a need for medication support, their ability to seek this support, ability to reach the pharmacy, ability to pay and engage). Results: The findings exposed the medicine, health and social care challenges of vulnerable people and how these are often not being adequately managed or met. Using the access formwork, we unpack and demonstrate the significant challenges patients face accessing pharmacy support. Discussion: Pharmacy organizations need to pay attention to how patients perceive the need for pharmacy support and their ability to seek, reach and engage with this. Further training may be needed for community pharmacy staff to ensure services are made accessible, inclusive and culturally sensitive. Effective engagement strategies are needed to enable the provision of a flexible and adaptable service that delivers patient-centred care. Policy makers should seek to find ways to reconfigure services to ensure people from diverse backgrounds can access such services.