England players Steven Caulker (l), Alex Oxlade Chamberlain (c) and Jermain Defoe (r) hold portraits of Arthur Pember, Ebenezer Cobb Morley and Charles William Alcock, three of the eight 'founding fathers' of football who created the rules of the game 150 years ago.
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Scotland Yard said two murder investigations have been launched following the separate incidents, which both happened in the past week.
Photos show the extraordinary surgical procedures to remove the growth.
The Met Police says 143 firearms have been handed in at stations across the capital in just seven days, including two antique machine guns.