Mines pretty much the same, it used to have limited up and down movement but no in and out.
If I pull on the steering wheel it just 'slides' out, very disconcerting the first time it happened, but even when pulled out, it still steers OK.
I said above, 'it used to' because now, the up and down has gone too.
I asked both a Land Rover dealer and an independent garage, the independent said its a common fault, there are apparently two plastic clips that connect to two worm drives, one for up and down, one for in and out.
Once they go, its a new column, the independent quoted about £500, the LR dealer quoted £1500 to diagnose and fix.
Apparently there was a campaign to get LR to accept this as a recall because it happens so often, but as yet, nothing.......
Sorry, not much help with a fix, but you never know, someone may have found a way to repair rather than replace.......