We consider a nonuniversal five dimensional model in which fermions are localised on a four dimensional brane, while gauge bosons and a scalar doublet can travel in the bulk. As a result of KK number non-conservation at the brane-bulk intersection, the ultraviolet divergence does not cancel out in some physical observables. For example, the B_d → l^+l^- decay amplitude is linearly divergent, while B--B̅ mixing amplitude is log divergent. We attempt to identify the exact source of this

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... lizability. We compare and contrast our results with those obtained in the universal five dimensional model where all particles travel in the extra dimension.