At ALICE experiment, PMD was used to measure the multiplicity and pseudorapidity density distributions of inclusive photons at forward rapidity, spanning the range η = 2.3 to 3.9. The measurement was conducted using LHC Run 1 and 2 data by PMD in pp (proton - proton collisions), pPb and Pbp collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair.