Assessing performance factors in the UK banking sector: a multicriteria methodologyAssessing performance factors in the UK banking sector: a multicriteria methodology Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-192006enFurther consolidation takes place not only among UK banks but also across borders, since some banks see size as a key factor in remaining competitive in international markets. Therefore, it is interesting to investigate the effectiveness and performance of UK banks. Based on their assets, banks are distinguished into small and large ones and a classification of UK banks in a multivariate environment for the period 1998–2002 takes place. The PAIRCLAS multicriteria methodology is employed to investigate the performance of UK small and large banks over multiple criteria, such as asset quality, capital adequacy, liquidity and efficiency/profitability. A comparison with discriminant analysis (DA) and logistic regression (LR) facilitates the investigation of the relative performance of PAIRCLAS against them. The results of the study determine the key factors that specify the classification of a bank as small or large and provide us with the responsible banking decision makers for future readjustments.http://creativecommons.org/licenses/by/4.0/Central European Journal of Operations Research14125-44 Michael Doumpos Δουμπος Μιχαλης Zopounidis Konstantinos Ζοπουνιδης Κωνσταντινος Pasiouras Fotios Πασιουρας Φωτιος Kosmidou, Kyriaki Springer Verlag UK banks Efficiency Mutlicriteria decision aid Performance