1 Exhibit 21 SUBSIDIARIES OF THE REGISTRANT Unidigital Elements (NY), Inc., a New York corporation Unidigital Elements (SF), Inc., a Delaware corporation, doing business as TX and Unidigital California, Inc. in California Unidigital/Cardinal Corporation, a Delaware corporation Unidigital/Boris Corporation, a Massachusetts corporation Elements (UK) Limited, a United Kingdom corporation Regent Communications (UK) Limited, a United Kingdom corporation, a wholly-owned subsidiary of Elements (UK) Limited