Lister Blackstone Marine
1965 Lister Blackstone Marine was part of Lister Group, part of the Hawker Siddeley Group.
1969 On 1st June, Blackstone and Co and Mirrlees National, both subsidiaries of Hawker Siddeley diesel company, were merged and the company traded under the name of Mirrlees Blackstone.
by 1971 the ship-related activities were Lister Blackstone Mirrlees Marine