First is the new Sport GT 2.2 i-CTDi and the other is the diesel-engined Accord SE 2.2-litre i-CTDi.
The Sport GT as an accord with a sports suspension and comes in Saloon and Tourer models. Not really sure how different they are apart from the fact that the Saloon has 17 inch alloy wheels whereas the later has 16 inch wheels.
One new colour option will be exclusive to this version - Premium White Pearl (shown here).
I don't have much information other than
The Sport GT is on sale from 1 September, expected to be priced from £20,767 (OTR).
On the other hand the Accord SE is a entry-level diesel engine car. It has a 6 speed gear box with stability assist. It is expected to be priced around £18,600 (OTR).