I bought a Mercia shiplap apex shed and the ordering process went smoothly. I am encouraged by the guarantee on the shed but not impressed by the quality of the timber and some of the wood is warped, although not too badly. My main complaint concerns the assembly instructions for the roof panels which could so easily be made foolproof but have resulted in my having to take them off and reposition them. The response from the "Customer Care" team was in effect that it was my fault as it was clear from the diagrams how they should be positioned. I would also add that the assembly instructions also recommend " that the building is sprayed with water during extended periods of warm sunshine and sheltered as much as possible during rain or snow". So it looks as if I will be spending most days in the future spraying water or holding a large umbrella over my shed to retain the guarantee!!