Changing the WWAN ID in BIOS acheived nothing (other than moving COM ports around).
Back into Ubuntu and minicom…
AT!ENTERCND="A710"
AT!NVRESTORE=0
AT!RESET
…to restore the device to defaults.
Now in W10
C:\Users\rory>netsh mbn show interfaces
There is 1 interface on the system:
Name : Cellular 35
Description : Generic Mobile Broadband Adapter #35
GUID : {95257072-BE2F-46A8-85B4-0E911A1E20E1}
Physical Address : 8c:9d:84:**:**:**
Additional PDP Context : No (Physical interface)
Parent Interface Guid : No parent
State : Connected
Device type : This is a remote device
Cellular class : GSM
Device Id : 014************
Manufacturer : Sierra Wireless, Incorporated
Model : EM7455
Firmware Version : SWI9X30C_02.30.03.00
Provider Name : EE
Roaming : Not roaming
Signal : 25%
RSSI / RSCP : 8 (-97 dBm)
AT!PCINFO?
State: Online
LPM voters - Temp:0, Volt:0, User:0, W_DISABLE:0, IMSWITCH:0, BIOS:0, LWM2M:0, OMADM:0, FOTA:0
LPM persistence - None
Not had a chance to test yet but it’s connected so that’s a result. Thanks for the tips jyijyi