John Lewis
They sell a wide variety of furniture which requires assembly.
Nursery Funiture
They sell typical sets and these take 2-3 hours to build depending on space.
Mix It Wardrobes
John Lewis have basically copied the Ikea Pax system. It is slightly better quality but takes longer to build due to the weight (typcially 90 mins per frame with doors etc compared to 60 mins for Ikea). Unfortunately the extras are not as plentiful at Ikea so the range is not as flexible. On the whole a good product.
Mix It Chest
Matching the above wardrobes are the MIx it chest, where you can mix and match frames and drawer fronts for various contemporary finishes. Typical they take 30 mins for the frame plus 10 mins per drawer.
Veneered Flat Pack (inc Sliding Door Wardrobes)
They are the only company who sell some high quality veneered flatpack furniture which looks very much like non flat pack when completed if that makes sense! Typcially an hour per wardrobe, the small sliding door wardrobe taking 90 minutes.