Without doubt they'll try, but if we're stupid enough to pay up there will be serious trouble in the streets. But then - who would know? Hold that thought?? Hell hath no fury like bureaucrats who don't get their own way. https://www.telegraph.co.uk/politic...tain-pay-brexit-bill-no-deal-would-cost-even/
I have to say that the UK is handling the Brexit process absolutely terribly. The very first thing they should have done was work out bilateral trade deals with the US, Canada, Japan, Korea etc similar to how the US trades with many countries. The UK was a net exporter in the EU which is so their advantage when leaving the EU and striking deals. Instead we get incompetent boobs trying to play nicey nice with the EU and dragging out an already long process even longer and making it more difficult than it needs to be to not hurt any feelings. Sorry but this is just like breaking up with your girlfriend. Both sides are going to get hurt a bit but in the long run its better cause its not healthy. The EU is a sick, emotionally stunted mommy's boy constantly telling his girlfriend what they are going to do or eat.
With no deal "only" about 16 billion is liable, the remainder being EU fees until December 2020. That 16 billion is commitments already made (pensions etc) which you could argue it's morally in order to pay, but without an agreement there doesn't seem any mechanism for it.