Uridium - Hewson/Graftgold (1986)

Another winner from Andrew Braybrook.  15 Super Dreadnoughts are mining entire planets - only your Manta Ray spaceship can stop them.  Kill the alien spacecraft and land on the Dreadnought when prompted to land now.  You can then set the desctruct sequence, collect a bonus and strafe the Dreadnought on the way to the next one.  Good game and amazing graphics.

The Dreadnoughts: