Teaching laboratory practical sessions are major components of undergraduate bioscience curricula, but research into staff perceptions and intentions across institutions in this context is lacking. This study describes a mixed-methods study using questionnaires and follow-up interviews to explore staff perceptions of their goals for UK bioscience teaching labs, the extent to which they incorporate student inquiry and challenges encountered with these sessions. The findings show that staff aim for strong lecture connections, applying taught theory to actively develop students' technical and data handling skills. They value teaching labs as opportunities for authentic contact through hands-on learning with scientific equipment and human connection with staff and other students. Student inquiry (e.g. experimental design decisions) was present in individual elements of teaching labs but not deeply embedded. Staff participants saw teaching labs as first steps to scientific inquiry, often intending to adopt more inquiry activities, but were concerned about time investment and student readiness, especially for early-year students. Staff who used more inquiry showed stronger goal focus on scientific reasoning, research experience and collaboration. Staff enjoy teaching labs and consider them meaningful learning experiences. Time and budget limitations were more constraining than sense of agency, but overriding challenges were student lab anxieties, and finding ways to increase their confidence and preparation for these sessions. These findings collate staff perceptions of teaching labs across UK institutions and could facilitate reflection, discussion and further research on the goals and impact of these prevalent but resource-intensive sessions on training the next generation.