Double killer serving life for two murders jailed for a further 22 years over string of sex attacks

Daily Mirror · Dan Warburton · 2026-11-06 13:26 UTC

Former Royal Navy petty officer Allan Grimson - jailed for the brutal murders of Nicholas Wright, 18, and Sion Jenkins, 20 - was found guilty of sexually assaulting four males including a 14-year-old boy in the 1990s

Former Royal Navy petty officer Allan Grimson - jailed for the brutal murders of Nicholas Wright, 18, and Sion Jenkins, 20 - was found guilty of sexually assaulting four males including a 14-year-old boy in the 1990s

A double killer nicknamed the "Frankenstein killer" has today been handed an extra 22 years in prison for a string of sex offences in the 1990s.

Former Royal Navy petty officer Allan Grimson was jailed for life in 2001 after luring two young recruits back to his flat in Portsmouth then brutally murdering them when they spurned his advances. He first killed Nicholas Wright, 18, on December 12, 1997 - before murdering Sion Jenkins, 20, exactly 12 months later.

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