I haven't specifically looked there yet but I did notice last time I jacked it up that the mounts in the picture previously were nice and tight to the top mount cup when the car wasn't on the floor, I'm away for a few days now but once I'm back I'm planning on slapping a camera in the engine bay pointing at the passenger side top mount while I go over some bumps to see how much it moves.

Ah okay, have you lifted it underside to see from the wheel arch?

While it likely will need doing in the near future, the clunking i hear is distinctly from the left and right, if it was coming from the same place each time it would be more likely to be the steering damper, it does "clunk" when turning left and right, but only very slightly, I have one purchased already and ready to install when I get some good weather and some spare time, but I don't think the majority of the clunking I am hearing is from this (due to it being very clearly sided clunking) As its air suspension the top mounts are likely somewhat different to the stock struts, I stuck my phone in and took a picture, does this look right to you?, is it worth me trying to tighten the centre nut?, the overall condition of the air suspension units themselves (everything inside the wheel well) and the visual look of its rubber components look very new and in good overall condition. It's just the gap between this rubber and the metal cup that's throwing me. After some digging it looks a while lot like an OEM part bolted to the top of an air strut, I have proactively emailed BOLD WORLD with my shocks model and serial number to see if it is indeed an OEM top part, hopefully it is as with it being an air strut it should be fairly straight forward (and safe) to replace. As a side note, I thought the back bolt was loose, but inspecting it further, it just a different bolt from the others and is tight.

Before attacking the suspension, have you checked the steering motor damper? The parts are £20 on eBay and fixed my clonking noise (especially bad at low speed, eg over cobbles). Mine had been changed at 73k km and needed doing again at 160k. Search YouTube for 'Alphard kok kok steering noise' for some examples. It took me a couple of hours to do, the main awkwardness was the column pivots on a single bolt and getting it lined up was annoying - and I needed a universal joint socket to get access to drive it.

I have the same, its worn suspension mounts.

So since we got the car, (2010 vellfire 2.4) the front left and front right makes a knocking sound when going over bumps, sometimes once or twice and sometimes several in very quick succession, the vehicle has air suspension, and this sound doesn't really change in pitch or how often it happens regardless of how high or low the car is set up, I had initially thought drop links because the noise I hear sounds all the world like a worn droplink, so I installed new ones and the sound didn't really change, inspected the sway bar bushings and they didn't look massively worn but I've replaced those with new OEM bushings and the noise still persists. Looking under the car the only thing I can really see that has any noticeable play is the driveshafts (both sides) but given that the noise is the same regardless of if I'm accelerating or not, and I don't get any odd sounds when turning at full lock I'm doubtful that it's those. Engine mounts look spot on and even when nudged with a bar they don't have much play at all, I've looked over the brakes and they don't seem to be doing it either (and the rattle/clunk happens even when breaking lightly and breaking hard) so I figured I'd ask if anyone has any ideas before i go having the lower arms removed and new bushings installed along with new ball joints. Thanks!