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From Des Elmes at 2008-09-19 01:41:44 : The batch of Merlins numbered MBA16-31 were delivered in late 1967 and, with the exception of MBA18 (which entered service in February 1968), were stored at Walworth and Camberwell for a full nine months before commencing Red Arrow duties. All sixteen were reclassified MB and transferred to Poplar garage in January 1970.