Can siege be broken by such organisations? (8)
I believe the answer is:
agencies
'such organisations?' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.
'can siege be broken' is the wordplay.
'be broken' is an anagram indicator.
'can'+'siege'='cansiege'
'cansiege' is an anagram of 'AGENCIES'.
'by' is the link.
Can you help me to learn more?
(Other definitions for agencies that I've seen before include "(Travel) offices" , "Businesses providing specific services" , "Businesses that provide services on behalf of others" , "Firms who transact business for others, perhaps actors" , "Bureaux" .)