Nope, that would be the rather unique text mode of the BBC Micro, which allowed you to do things like double-height letters. AFAIK, only Ceefax and the BBC Micro supported that.

This is definitely based on the standard EGA/VGA text mode (originally 80x25 characters) used by DOS. Mode 0x10 IIRC.

This is also using the standard codepage 437, which includes the characters for single and double borders. You could also rewrite the symbol table to make custom characters, which is what Norton Utilities and others did.