England's head coach Eddie Jones will have to follow government advice upon his return to the UK, which could involve a 14-day self-isolation period.
The Aussie, who is currently still in Japan, is understood to be planning a return to the UK next month.
England coach Eddie Jones may have to self-isolate after returning to London from Japan.
But with the government expected to impose a strictly-enforced 14-day quarantine for all travellers arriving into the country.
Matt Proudfoot, the England forwards coach, is also out of the country, visiting family in South Africa.
"We will ensure all coaches are back in sufficient time to be fully available for when international rugby resumes," said an RFU spokeswoman.
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John Mitchell and Simon Amor, the other two members of Jones's coaching team, are currently in the UK.
It's looking likely that their tour to Japan later this year will be cancelled.
England’s Ultimate All-time 31 man squad
England have had plenty of superstars down the years.
So, narrowing that down into one ultimate 31-man squad won't be easy.
It'll be fun, though, and, this is a lockdown, it's what we do now.
Here we go.
Back-three (5)
- Jason Robinson
- Rory Underwood
- David Duckham
- Jonny May
- Ben Cohen
Centre (4)
- Will Greenwood
- Manu Tuilagi
- Jeremy Guscott
- Will Carling
Props (5)
- Jason Leonard
- Mako Vunipola
- Phil Vickery
- Andrew Sheridan
- Kyle Sinckler
Hookers (3)
- Steve Thompson
- Brian Moore
- Jamie George
Locks (4)
- Martin Johnson
- Maro Itoje
- Paul Ackford
- Bill Beaumont
Back-row (6)
- Richard Hill
- Neil Back
- Lawrence Dallaglio
- Peter Winterbottom
- Tom Curry
- Dean Richards
Scrum-halves (2)
Fly-halves (2)
- Jonny Wilkinson
- Owen Farrell