I will discuss an alternative method of probing trilinear Higgs self coupling  in single Higgs 

production and decay channels at the LHC. We study the effects of anomalous trilinear 

coupling in NLO EW corrections to single Higgs processes. We identify the distributions 

that are more sensitive to the trilinear coupling. Finally, we perform a global fit at inclusive 
and differential level to constrain the trilinear coupling at current and future LHC runs. 
We find that the indirect constraints on trilinear coupling thus obtained are competitive and 
complementary to those obtained from double Higgs production measurements at the LHC.