Exhibit 21

Subsidiaries of Mobile Mini, Inc.

	Jurisdiction of		Percent
Name of Subsidiary	Incorporation/Formation	Parent	Ownership
Mobile Storage Group, Inc.	Delaware	Mobile Mini, Inc.		100	%
Mobile Mini I, Inc.	Arizona	Mobile Mini, Inc.		100	%
Delivery Design Systems Inc.	Arizona	Mobile Mini, Inc.		100	%
Mobile Mini, LLC	California	Mobile Mini, Inc.		100	%
Mobile Mini, LLC	Delaware	Mobile Mini, Inc.		100	%
A Royal Wolf Portable Storage, Inc.	California	Mobile Mini, Inc.		100	%
Mobile Mini UK Holdings Limited	United Kingdom	Mobile Mini, Inc.		100	%
Mobile Mini Holding, B.V.	The Netherlands	Mobile Mini, Inc.		100	%
MSG Investments, Inc.	California	Mobile Storage Group, Inc.		100	%
Mobile Storage UK Finance LP	United Kingdom	MSG Investments, Inc.		99	%
		Mobile Storage Group, Inc.		1	%
Mobile Storage Group L.P.	Texas	MSG Investments, Inc.		99	%
		Mobile Storage Group, Inc.		1	%
LIKO Luxemborg International S.a.r.l.	Luxemburg	Mobile Storage UK Finance LP		100	%
Temporary Mobile Storage, Inc.	California	A Royal Wolf Portable Storage, Inc.		100	%
Mobile Mini B.V.	The Netherlands	Mobile Mini Holding, B.V.		100	%
Ravenstock MSG Limited	United Kingdom	Mobile Mini UK Holdings Limited		100	%
Mobile Storage (UK) Limited	United Kingdom	Ravenstock MSG Limited		100	%
Ravenstock Tam Limited	United Kingdom	Ravenstock MSG Limited		100	%
Mobile Mini UK, Ltd.	United Kingdom	Mobile Mini UK Holdings Limited		100	%
Box Lease Limited	United Kingdom	Mobile Mini UK, Ltd.		100	%