My website shares some free BS standards.Of course,you can find BS standards list here.Have a lucky day.
BS ISO 5611-11:2015 pdf free
BS EN ISO 10320:1999 pdf free
BS ISO 104:2015 pdf free
BS ISO 7992:2015 pdf free
BS ISO 16682:2015 pdf free
BS ISO 20785-3:2015 pdf free
BS ISO 3537:2015 pdf free
BS ISO 7098:2015 pdf free
BS ISO 19344:2015 pdf free
BS ISO 18843:2015 pdf free
IEEE C57.94-2015 pdf free
IEEE C57.12.00-2006 pdf free
IEEE Std 485-2020 pdf free
IEEE C57.12.91-2020 pdf free