Bear Grylls showed off his quirky sense of humour as he shared a snap of himself playing table tennis with a tomahawk steak on Instagram on Thursday.

The adventurer, 48, could be seen deep in concentration as he was engaged in the game with the piece of meat.

Sharing another of his sporting highlights, the television star posted a picture of himself playing a match with Swiss tennis player Roger Federer, 41, at the top of a snowy mountain.

Bear captioned his post: 'I have always loved table tennis… here are some highlights from some fun matches and battles… 

'There have been some interesting paddles used too: from machetes with @jimmyfallon to up mountains with @rogerfederer - and even tomahawk steaks with @ancestralsupplements #adventure #stateofmind #nevergiveup.'

It comes after Bear hinted at an upcoming 'special programme' after visiting Ukraine recently.

He said will show a side of President Volodymyr Zelensky 'never shown before', as the country sets in for a hard winter amid Russian bombardment.  

A video of the two sharing a piece of chocolate surfaced after Bear revealed via his social media posts that he was in Kyiv.  

'Bear Grylls, thank you for this visit to Ukraine!' said Zelensky in a Telegram post. 'It is important to make the world hear the truth about the struggle of Ukrainians for their freedom and democracy, about the missile terror of the aggressor against our people.'

After meeting President Zelensky, he said: 'It has been an experience for me like no other. As the country goes into winter, and with their infrastructure under attack, survival for millions of people is a very real daily struggle.'

'I wanted to ask how he was really coping... I got so much more,' he said about his conversation with the President, hinting at content for a possible special.  

He thanked Ukrainians for their hospitality and urged the Ukrainian people to 'stay strong'.

Ukrainians are facing brutal conditions due to Russia's destruction of the country's civilian infrastructure, with Vladimir Putin's troops firing missiles at civilians in Kyiv and targeting the energy grid to try to freeze the country into submission.

Bear, the son of the late Conservative politician Sir Michael Grylls, joined the army and the SAS before becoming a TV star and expert survivalist.