Sorry to reignite an old thread, but I thought it was important to give correct information to UK buyers.
The information given above is incorrect.
The UK version of the CM100LTE that comes with a Vodafone SIM provides LTE/Cloud support the the Blackvue X series of dashcams.
The DR900X and X Plus got firmware updates that allowed the dashcam itself to be used as a WiFi hotspot, therefore allowing connected devices to use the LTE connection to connect to the internet.
There is NO issue with this or restriction with the UK version of the LTE module or supplied Vodafone Smart SIM/V-SIM.
You simply connect and set up the LTE module as normal - then connect any WiFi device to the camera 's WiFi using the camera's WiFi name and password (as you would with your phone when setting up the device).
That's it - the connected devices then piggybacks on the LTE connection.
I have done this with multiple UK LTE modules (with the supplied Vodafone SIM on £4/month contract - 40GB) and X-series dashcams, with passengers able to use the dashcam's internet connection through WiFi when travelling in the vehicle.
The above OP suggests that they could not get this to work in their own, but I can confirm that there is NO restriction or limitation at all with the LTE module or the SIM, as they have no bearing on what device is connected via the camera's WiFi, as everything runs through the camera to the LTE, so the LTE and SIM have no knowledge of the number of connected devices.
The dashcam acts as an LTE router.