Peter J Douglas Engineering is an engineering services contractor.

The business provides specialist services which include the installation and maintenance of industrial boilers and associated plant for the power market (coal fired power station and gas turbine power stations), the environmental market (energy from waste incinerators) and the industrial market (cement, chemical, refineries and water treatment plants).

In December 2011, LDC invested in PJD Group. In 2016 LDC exited PJD Group in a management buyback.