Have not bothered to check all this information but could well be fake news(the land tax and the associates figures).
"The right-wing press are LYING to you about Labour’s ‘Land Value Tax’. Here’s the truth."
http://evolvepolitics.com/right-wing-press-lying-labours-land-value-tax-heres-truth/
Well the truth is better than what I found in the Telegraph but still bad from my point of view. My council tax bill/Land Value Tax will still have a 60% increase going from £1,700 to £2,700 roughly. That's going to annoy a lot of people down south.
Edit:
I suspect it would be a tax drop or even neutral. Unless you have 5 acres of landscaped gardens or something I cant see your plot been worth more than £50k £60k so your land tax instead of your council tax would be £1500 to £1800.
I am not sure that is right based on the article Chronicalcard posted. If it was then the majority of people would be paying less which is good but then what replaces the lost tax generated?