As Mottie wrote, the exact combination of letters/numbers you mentioned is not possible. However, if one reduces it to "B4RRY", then DVLA says that it is 'not available' ....It was "Something" along those lines as I remember it but may not be 100% accurate but you pretty much get the gist of my meaning hopefully.
... but I wonder whether it is perhaps 'not available' because someone has already 'bought' it, since if one goes to this website (click here) one finds (at a very silly price, echoing your comments
Kind Regards, John
