Original sentence: It is based on the SSTL-100 satellite bus.UK-DMC 2 is a British Earth imaging satellite which is operated and was constructed by Surrey Satellite Technology.UK-DMC 2, along with the Deimos-1, Nanosat 1B, AprizeSat-3 and AprizeSat-4 satellites, were the rocket's secondary payload
Edited sentence: It was constructed by Surrey Satellite Technlogy, based on the SSTL-100 satellite bus.UK-DMC 1, along with the Deimos-1, Nanosat 1B, AprizeSat-3 and AprizeSat-4 satellites, were the rocket's secondary payload.UK-DMC 2 is a British Earth imaging satellite which is operated by the National Space Centre