Comedian John Bishop has completed his gruelling cross-Channel row, despite becoming “delirious” and nodding off during the journey.

John, battling sleep deprivation and nursing crippling aches after the exhausting trip, now faces a race against time to get fit in just hours for three marathons on consecutive days.

John had managed the 26-mile row across the choppy English Channel on just one hour’s sleep, after earlier completing a 185-mile cycle ride.

The draining tasks are part of a “week of hell” which the funnyman aims to complete, travelling from Paris to London in five days for the BT Sport Relief Challenge.

He and fellow rowers Davina McCall, Denise Lewis and Freddie Flintoff completed their crossing in seven hours and 45 minutes – almost two hours longer than expected.

John was already in extreme pain after more than 18 hours in the saddle for the bike leg of the journey.

He was struggling to speak coherently during a live Radio 1 interview as he carved through the Channel.

His trainer Professor Greg Whyte said the race was now on to get him back on form to begin his first marathon.

He said: “We need to try and negate the damage that the last two days have done.

“There’s the muscle damage that both the ride and the row has caused, the big energy deficit that John has suffered and most importantly the massive sleep deprivation. We’ve only got 12 hours so we will do our best.”