The 66-year-old former Genesis star suffers a serious cut close to his eye requiring stitches in hospital.
Phil Collins has been forced to postpone a number of shows after tripping over in the middle of the night and hitting his head on a chair.
The 66-year-old singer needed stitches for a serious cut close to his eye following the fall in his London hotel room and was being kept under observation for 24 hours.
It happened just hours after he performed at the Royal Albert Hall on Wednesday night as part of his comeback tour.
The former Genesis star suffers from a condition called "drop foot" following a back operation, which causes him difficulty walking.
His scheduled Thursday and Friday concerts at the venue have been postponed until November.
A spokesperson said he was "recovering well", adding: "He rose in the middle of the night to go to the toilet and slipped in his hotel room, hitting his head in the fall on a chair.
"Phil suffers from 'drop foot' as a result of a back operation which makes it difficult to walk.
"Phil sends his sincere apologies and thanks to fans.
"He has had a fantastic week at his first shows in 10 years, cannot thank people enough for their warm reaction and is excited to return."
He is expected to continue his tour in Cologne, Germany, on Sunday before performing at British Summer Time Hyde Park on 30 June.
The Another Day In Paradise star officially retired in 2002, but announced his return in October last year.
Tickets for the postponed concerts will remain valid for the Royal Albert shows on 26 and 27 November, his representatives said.