The University of Bristol is generally considered one of the leading research universities in the UK. It often ranks among the top institutions in various national and international university rankings. In the context of research intensity, it typically performs well in assessments like the Research Excellence Framework (REF), which evaluates the quality and impact of research conducted by UK universities.
As of the latest available data before my last update in October 2023, the University of Bristol is frequently ranked within the top 10 to 15 universities in the UK, and its research output and quality are highly regarded across various disciplines. For the most accurate and current rankings, including specific metrics around research intensity, I recommend checking recent publications or university ranking websites, such as The Guardian, QS World University Rankings, and Times Higher Education.