So im fairly confident i have just managed to SE myself a OnePlus 6T
Ive been searching ebay for some serials and came across a OnePlus 6T 256GB model with full imei and serial numbers plus i generated a POP from amazon uk.
Been on the phone to customer service using the excuse of the battery exploded while charging - initially there were adamant they want the phone back or at the very least pictures but i kept going explaining how bad and dangerous this is, and the fact i couldnt send the item back due to a faulty battery - They eventually asked for all my details and pop, serial and imei number - just waiting for thier response.
Will keep everyone updated if they send a replacement.