Here are some of the key findings:

78% of the scientific production in collaboration between Spain and the United Kingdom is published in the most relevant journals in the world or in the first quartile, an indicator with a value much higher than those of the scientific production of each country separately, 55.6% for Spain and 64.3% for the United Kingdom.

The United Kingdom is the second best scientific partner for Spain, only behind the United States. Spain is the eighth collaborating country for the United Kingdom.

Between 2011 and 2020 the scientific production in collaboration between both countries almost doubled, with the annual growth rate of 18.2%. In total, 79,805 documents were published in collaboration between Spain and the United Kingdom during this decade.

The excellence rating of collaborative publications is, on average, 33%, much higher than the excellence rates of Spain (14.5%) and the United Kingdom (18.2%) individually.

By subjects, Medicine is the one in which the largest number of documents are produced, followed by Physics, Astronomy and Biochemistry, Genetics and Molecular Biology.

The great research organizations and the best universities of both countries are part of the main institutions that collaborate together. In the case of Spain, by number of documents in collaboration, the Higher Council for Scientific Research (CSIC), the University of Barcelona, the Autonomous University of Barcelona, the Autonomous University of Madrid, the University of Valencia, the Complutense University of Madrid and the Center for Biomedical Research Network (CIBER) stand out. The main production institutions in the United Kingdom that collaborate with Spain are: University College London, Imperial College London and the Universities of Oxford, Cambridge and Manchester.