There is a twinkle in Marc Dal Maso’s eye when he introduces the new love in his life. ‘My new fiancee,’ he says. ‘She’s not pretty but she has helped me. She will be with me until the end.’

It is a dark-humoured reference to the Parkinson’s disease which is degenerating his nervous system.

‘Sincerely, I was lucky to meet her. Without this disease, I wouldn’t have achieved what I have. My new fiancee is always right behind me. She has taught me to take on every opportunity in life.’

Marc Dal Maso will be England's new scrummaging consultant in the lead up to the World Cup

Dal Maso’s most recent opportunity was an invitation for dinner with Eddie Jones in Marseille. The Frenchman worked with Jones in Japan and, at the end of the meal, he was asked to join England’s coaching team as a scrummaging consultant in preparation for next year’s World Cup. ‘We talked about scrums for two hours and ate seafood,’ he says. ‘Plenty of fruits de mer.

‘Eddie gets a bit frustrated with my English but the language of rugby is like making love... it’s universal. It was quick — fly, eat, fly — and he offered me an opportunity which I couldn’t turn down.’

The former France hooker, 50, will balance the role with his Toulon commitments. He will be in camp for the final week of January, before flying over once a week through the Six Nations.

Dal Maso was asked to join the England team following dinner with Eddie Jones in Marseille

His illness, which he initially kept secret from Jones, has not hindered his coaching career.

‘I take 15 tablets a day,’ he says. ‘9am, 11am, 1pm, 3pm, 5pm, 7pm and so on. If I don’t have my pills at the right time, I become like a statue. My body freezes. Is it scary? I’m not scared of it. It is who I am and you adapt. I have an alarm on my watch to remind me, so I work as normal.

‘My philosophy on life has changed but my coaching is the same. I can still do lots of things. Anyway, I’ve always been… how do you say in English… f***ed in the head… crazy! It’s nothing new!’

His illness, which he initially kept secret from Jones, has not hindered his coaching career

Dal Maso sat down to speak with The Mail On Sunday's Nik Simon in the French city of Toulon

GRAND SLAM WINNER 2 - Number of Grand Slams won by Dal Maso as a player for France, in 1997 and 1998 Advertisement

All cut from a similarly eccentric cloth, Dal Maso is an ideal mentor for the likes of props Joe Marler, Ellis Genge, Kyle Sinckler, Harry Williams and Beno Obano. Speaking over lunch, he analyses England’s scrummaging technique, using his knife and fork to represent their left and right feet.

‘Scrums are like Canada Dry and ginger ale; different but all the same,’ he says. ‘The Japanese have the best body position in the world because their players are much more flexible. For the English, it is a big advantage that all of the world’s referees speak in their language.

‘You need a good scrum to win the World Cup. If there are 22 Tests between now and the World Cup final, that could be 440 scrums. The last one could be the difference between winning and losing the World Cup. If you lose a scrum you lose a psychological battle.

He takes 15 tablets a day and if they are not at the right time his body 'becomes like a statue'

Dal Maso won two Grand Slams during his career as a player for France, in 1997 and 1998

‘England’s scrum is strong. After Toulon played Bath, I Skyped Neal Hatley and we spoke about Obano; very physical.’ He is in his element, verbally dissecting the set piece, laughing and joking, when Chris Ashton walks past. ‘Eddie’s No2?’ shouts Toulon’s exiled English winger. ‘Meet the real England coach!’

Dal Maso is happy to answer questions about Ashton’s impact since his arrival from Saracens. ‘Chris scores a lot of tries,’ he says. ‘Our supporters like the Ash Splash. He’s good for us.’

There are other questions, however, which prompt a more guarded response. Such as the temptation to pursue a role with the French national team — whom he played for 33 times — over England. ‘That’s a good question. Ask me another day!’ he says, laughing.

‘It’s not a dream to coach France but, when England play in Paris, it might be best if I’m discreet! It has been difficult for France. They have just fired their coach [Guy Noves]. Sometimes life is difficult.’

Dal Maso is an ideal mentor for the likes of props Joe Marler, Ellis Genge and Kyle Sinckler

Also, as a former hooker, does he think Jamie George should start ahead of Dylan Hartley?

‘Sorry, I don’t understand the question!’ he laughs. ‘Eddie’s crazy but he knows where he wants to go. That is his job. He will think of an idea in his sleep and wake up at 5am to write it down.

‘I look at rugby like an ensemble. Who starts is not the most important issue. How they combine to produce the best outcome for the team is the most important issue. Everything evolves.’

For Dal Maso, his own coaching career is still evolving — despite the adversity of the medical bulletins. He is proud of the past, focused on the present and not overly concerned by the future.

‘I don’t worry about the future,’ he says. ‘Why would I? We’re all degenerative. Everyone is getting older, balder and slower. Maybe I’ve aged a little quicker but that’s what happens when your fiancee breaks your balls every day.’