if the Yen doesn't do anything about its old policy will still have an impact on it as they need to look everything over. They don't do nothing about it and allow the dollar to do a comeback of the decade we'd see an interesting to see how they tackle interest rates, inflation etc
Again more buying in the gbp will boost it in normal terms and an seller liquidated will push price to.highs it hasnt seen since the 1940/2000
Yen needs to get a plan because after every intervention it just pops up. No sellers on top and cant hold for year on years might fail in a few weeks to months
No buying yen means it will waken against gbp with any news that's negative just intensifies.
Selling of old positions might just make it go high after every attempt to push it down was to take most profit loss of gains.