If the choice was between a socialist party coming to power promising to nationalise the commanding heights of the economy, or ANYTHING other than that, the Lib Dems would choose the latter
There is zero chance of Lib Dems allying with Tories and RefUK. Absolute rubbish, they are diametrically opposed on everything. Labour are much nearer but wouldn't just because of the optics and to maintain the pretense we have some sort of choice in UK elections.