The inferno in the 24 storey block in North Kensington started in the early hours as a fridge fire.
An ongoing inquiry into the tragedy has since found that cladding was a key factor in the rapid spread of the blaze.
Firefighters, led by Norbiton based Fire Brigades Union, will join bereaved family members and survivors in a silent walk.
A memorial service will be held at Westminster Abbey later.
Local councillor Claire Simmons is among those who will be there and is expecting a difficult day: