Doesn't look like it to me. The most noticeable difference right off the bat is that the one in your photos has tapered round legs set back from the sides. The G Plan sofa's legs are integral to the sides of the frame.
This is the one I'm comparing it to:
http://www.retrospectiveinteriors.com/content/retro-afromosia-sofa-bed-g...
If you need any help, please contact us at – info@designaddict.com