Re: Wasn't "But we had to have SMB for our internal shares on the network" the NHS problem?
HMRC. If you are a 'contractor'' and not a "worker" or "employee", your contract may state you must provide your own IT equipment EXCEPT when working on site of Client. This is an established part of proving 'independence' under HMRC probe for IR35. Thus ,yes, there is a case where a contratcxor would connect to NHS via their own computers from home, for remote working.