Toilet seat broken can't find replacement?

we bought a bathroom suit fron MFI years ago the toilet seat has just broken.the fittting dimensions on the back are 230 cm 9 in centre,i have trawled the internet trying to find a replacement with no luck can anyone help.
Update: if it was as easy as going to local builders i would not be asking this question on answers it is the width of the fixings that are the problem.9 in centres
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