NHS uses tin complex as service accommodation (6,4)

I believe the answer is:

nissen huts

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'as service accommodation' is the definition.
I can't tell whether this definition defines the answer.

'nhs uses tin complex' is the wordplay.
'complex' indicates anagramming the letters.
'nhs'+'uses'+'tin'='nhsusestin'
'nhsusestin' anagrammed gives 'NISSEN HUTS'.

Can you help me to learn more?

(Another definition for nissen huts that I've seen is " Prefabricated military buildings".)

I've seen this clue in The Times.

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