Death toll from tower block blaze up to 17

Police says 17 people are now confirmed to have died in the west London tower block fire.

Police says 17 people are now confirmed to have died in the west London tower block fire. (AAP)

The death toll from the London tower block fire has risen to 17 and the figure is expected to rise further, police say.

"Sadly, I can confirm that the number of people that have died is now 17," London police commander Stuart Cundy told reporters.

"There is still a number of people who are receiving treatment in hospital. There are 37 people receiving treatment, of which 17 are still in critical care."

The fire engulfed a 24-storey building in west London in the early hours of Wednesday.