To ask for your help with my sofa

[Sofasobad]

Oh you wise and wonderful mumsnetters!
I need help and I know you're usually good at finding things.
I picked up a secondhand sofa bed, that literally came in pieces. The lovely lady who I got it off forgot to take pictures of how it went together and no longer has the instructions or knows where it came from.

So my dilemma is how the hell do I put it back together? I've tried google images with the picture I have but that isn't working so maybe one of you may be able to help.

Tia

any labels at all of any kind that might help pinpoint a name or manufacturer?

@welldonesquirrel Not a single label insight.

That looks very much like a Nabru sofa. We have one, albeit not a sofa bed, and it has the same components.
Their customer service is brilliant so I'm sure they can help with a PDF or there may be some online.
Good luck.

@jamfirstcreamsecond Wow! I think that's the one, thank you. I'm going to have a look for some online instructions now.