And Wales technical advisor Warburton insists there are grounds for optimism on the fitness front ahead of the trip to Twickenham.
“He’s looking good,” said Warburton when asked about the fitness of Biggar.
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“The initial signs are positive. He doesn’t need a scan. It puts our team selection on hold for a while because we have to wait to see how he turns up tomorrow.
“He’s going to train and do stuff with the physios. But everyday so far, the feedback from the physios has been good, he’s had a really good response to the stages of physio.
“He’s ticking all the boxes he needs to. He’s on a good course so, hopefully, with no hiccups, we’ll have some good news.
“I would say, at this stage, we’re confident but there are no guarantees. There’s a hurdle every day, the training becomes gradually more intense and will climax towards the end of the week...
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“Josh is back in full training and is available again. We do a pretty demanding drill with Byron and he turned up and absolutely nailed it...
"Liam’s back in full training. If you ask him, he was ready to play against France.
“He’s back in full training. He will hopefully be in contention to start.
“This is the sort of cauldron he would love to be thrown into.”
