  The flavour changing decays of the top quark are severely suppressed in the
Standard Model by virtue of the Glashow-Iliopoulos-Maiani mechanism. Many
beyond Standard Model extensions predict the decay rates at a level that is
observable in the LHC. We perform a complete one-loop calculation of the
flavour changing top quark decays $t\to c\gamma$ and $t\to ch$ in the universal
extra dimensional model. Apart from considering the decay rates in the minimal
version of the model, we also calculate the rates in the non-minimal scenario
where the presence of boundary localised terms interestingly modify the set-up.
We find that the decay rates in the minimal variant of the model do not change
much from their Standard Model values. In the non-minimal version of this
model, these decay rates can be higher for specific choices of the boundary
localised parameters for a certain range of inverse compactification radius.
But these model parameters lead to Kaluza-Klein particle masses that are in
tension with various searches at the LHC.
