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I bought it from a firm called GROVERNOR, when I called to tell the that the chair did not suit, they turned the problem back onto me, they are coming out this Thursday with an engineer to see what is what, BUT, after having spoken to them on the phone I get the feeling that they will not let me return the chair, which BTW cost a 4 figure sum, so I decided to pre-empt them and give the chair away to someone who needs it, I am in the Edinburgh area if anyone is interested.