Nepali government figures show that about 500,000 families were made homeless by the quakes.

But aid agencies say the true figure is much higher, with millions homeless.

The IFRC says "an estimated four million people are still living in sub-standard temporary shelters" where they're exposed to weather and health hazards.

It also estimates that more than 800,000 homes were damaged.

"Despite achievements in many areas of earthquake recovery efforts, little progress has so far been made in helping survivors to rebuild permanent homes," it said