The 38-year-old comedian took time off to be with his mother Barbara in her time of need, reported Ace Showbiz.
The shows were supposed to take place at Coventry's Warwick Arts Centre and at Assembly Rooms Derby this past weekend.
"Sorry to eff you around with gigs. My mum ain't well. Tix will be honoured or refunded," he tweeted.
The one at the Warwick Arts Centre has been rescheduled for April 19.
"We apologize for any inconvenience caused," the venue said in a statement.