And your point being ILS 119.5? I fail to see what relevance various scenarios such as yours have.
But if you want an opinion:
If 'someone' took it no further then nothing would be done. If they told the airline management then I cannot see any UK management just 'ignoring' the warning in order to get the next sector flown. They would most likely want to cover their backsides, even if they didn't have a safety culture. If they then suspended the pilot with no evidence other than hearsay then they would likely be on the losing end of an employment tribunal.
PP