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Drill down further...
ODOB ODOC ODOD ODOE ODOF ODOG ODOH ODOI ODOJ ODOK ODOL ODOM ODON ODOO ODOR ODOT ODOU ODOW ODOY ODOZ
Surnames shown in bold text represent around 90% of the population of Great Britain. All other names are very uncommon in the UK and we are unlikely to have any useful data on them.