any credit refererence agency will report county court judgements and should tell you if a company is in administration – as per OP believe this has to be reported to companies house
most credit agencies will set up "watches" on specific companies for a small fee
a company in administration can't (read as shouldn't) be ordering goods or services under its existing legal title – safest thing if you have concerns is to insist on written "official" purchase orders (hard if electronic linked or multisite contracts)
if the administrator orders then the administrator and not the failed company is liable (they may choose to do this if something needed that will add value eg complete a big piece of kit that can be sold)
but needs to be absolutely clear on paperwork that it is the administrator ordering
other thing is relationship between yr credit controllers and customers payments people – regular friendly contact may give valuable insights