  Flavour Changing Neutral Current (FCNC) processes are forbidden at tree level
in the Standard Model and highly suppressed at higher orders. This makes FCNC
one of the key processes to search for new physics since any small deviations
from the Standard Model expectations could have a big impact. Both ATLAS and
CMS Collaborations have designed a comprehensive strategy to search for FCNC in
top quark physics both in the production and decay. The strategies followed by
both collaborations are here described, using data from $pp$ collisions at the
LHC collected at a centre of mass energies of 7 and 8~TeV with integrated
luminosities ranging from $5~\rm{fb}^{-1}$ to $20.3~\rm{fb}^{-1}$.
