Well I jacked it up myself in the end using a trolley Jack and measured it. I reckon a scissor jack with a lifting height of 380mm should be ok. Just need to pick one now from the bay.

Hi, We've recently acquired a 2017 1.6 Vitara and I've managed to source a 16"space saver wheel and tyre for £20 off gumtree but need to purchase a scissor jack as well. On ebay they range in maximum lifting height from around 330mm to 385mm then 440mm. Would the 385 lifting height give plenty ...