The BBC micro is one of the few 8-bit computers to support hard discs. I have a number of working hard disc units, as well as other "mass-storage" devices and host adapter and controller boards. Please click on the picture links below to learn more:

Akhter Host Adapter	Syquest Drive	Acorn Winchester Disc	Technomatic Winchester Disc	Xebec Winchester Controller
Acorn Winchester Disc 130	Digital Services Digistore	Using Modern SCSI Drives	Akhter Winchester Disc	Akhter & Technomatic Winchesters
Byte-Back Compact Flash Drive	Using the Byte-Back CF Drive	Biscuit Winchester	Acorn World CF Drive	Torch SCSI Adapter
SCSI Mad Miniscribe	CF Converter	Fuse ADFS	Syquests	Syquest SQ5110
Syquest SQ5200	Using Syquest SQ5110	Using Syquest SQ5200	Miniscribes	Flash Format
CF Backup	DFS Backup	CF-PC Transfer	PC-CF Transfer	SCSI2SD
Syquest 270MB Drive	Using Syquest 270MB Drive	Winnie Box	ADFS Imager	BeebSCSI
Winnies 2019	Technomatic Rescue	Pi 1MHz	More Technomatic Rescue	Ken Lowe Pi 1MHz
ADFS Imager 2020	Akhter Hard Drive 2020	Using Akhter	More ADFS Imager	UFD Winchester Disc
Acorn Winchester 130 September 2020	Using the Acorn Winchester 130	Double Winchester September 2020	Using the Double Winchester	Ken Lowe Host Adapter
Using the RO3055	Acorn Midwinch	Seagate with MWFS	Lexikon HD352	Using Lexikon HD352
NEC OS9	Image NEC OS9	Use Xebec	New NEC OS9 Image	Tandberg SCSI Drive