I tend to agree with Craig Murray that as this case moves up the judicial system with more senior Judges involved, all the way to the Supreme Court and even beyond; the case against Assange brought by the Americans will recieve a lot more scrutiny on legal and principled grounds.
It's not really a secret that many people involved in the judicial system, as Murray states, are 'pushing back' against the terms of the extradition treaty signed by the Blair government with the United States, because it's so blatantly one-sided and gives the American judicial system a kind of 'special status', encroaching on the UK's own legal system, that many people, including Judges, find appalling and oppose in principle.
Also the Trump administration isn't exactly popular in the UK, so sending Assange to the US isn't going to be that easy or popular. The Judges may despise Assange, but they have even more contempt for Trump. Then one has to factor in the chances of a new government coming to power and a new Home Secretary, Diane Abbot, who I don't think will allow Assange to be extradited.