What would happen if they used a standard BS-1363 to IEC C-13 lead? If staff insist on "forgetting" to disconnect before moving the bed, wouldn't that arrangement result in a safe disconnection as the straight pull at the C-13 plug caused separation at the C-14 socket? Why all the extra complication (and additional possible sources of faults) in employing umpteen connections? Believe me, the arrangement you're talking about is simply for the convenience of the manufacturer. All the rest is just
humbug.Remember too (with reference to the DTI document that you linked to earlier), that we are talking here about electrical safety in government hospitals (that is, establishments that ought to be above reproach in such respects), not the application of standards leveled at electrical junk of the type typically found in street markets!
