The former Next retail unit (2) is currently under offer to a National high street retailer.
The letting comes on the back of Next relocating into a 40,000 sq ft store on the park to include an element of fashion in their offering.
The final letting will leave the park 100% let following the recent Pod office lettings and the new Next store opening in August.
Following the receipt of planning consent last year for the new Viridor Waste to Energy Facility at Trident Park, work is now well under way with a completion date of November 2014.
PMG completes the freehold purchase of the former Maskreys Furniture Store on Whitchurch Road, Cardiff.
The freehold sale closely follows the long leasehold sale of the ground floor which is let to Sainburys on a 15 year term.
Munrow Developments Ltd bought the freehold which has planning for 9 residential units at 1st and 2nd floor.