Exhibit 31.1  CERTIFICATIONS  I,
Robert Mackenzie, director of Virgin Media Directors Limited, certify that:  1.I have
reviewed this quarterly report on Form 10-Q of South Hertfordshire United
Kingdom Fund, Ltd.  2.Based on my
knowledge, this report does not contain any untrue statement of a material fact
or omit to state a material fact necessary to make the statements made, in
light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report.  3.Based on my
knowledge, the financial statements, and other financial information included
in this report, fairly present in all material respects the financial
condition, results of operations and cash flows of the registrant as of, and
for, the periods presented in this report.  4.The registrants other certifying officer and I are
responsible for establishing and maintaining disclosure controls and procedures
(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and
internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and
15d-15(f)) for the registrant and have:  a)Designed
such disclosure controls and procedures, or caused such disclosure controls and
procedures to be designed under our supervision, to ensure that material
information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly
during the period in which this report is being prepared;  b)Designed such internal control over financial
reporting, or caused such internal control over financial reporting to be
designed under our supervision, to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements
for external purposes in accordance with generally accepted accounting
principles;  c)Evaluated
the effectiveness of the registrants disclosure controls and procedures and
presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the period covered by this
report based on such evaluation; and  d)Disclosed in
this report any change in the registrants internal control over financial
reporting that occurred during the registrants most recent fiscal quarter that
has materially affected, or is reasonably likely to materially affect, the
registrants internal control over financial reporting.  5.The
registrants other certifying officer and I have disclosed, based on our most
recent evaluation of internal control over financial reporting, to the
registrants auditors and the audit committee of registrants board of
directors (or persons performing the equivalent functions):  a)All
significant deficiencies and material weaknesses in the design or operation of
internal control over financial reporting which are reasonably likely to
adversely affect the registrants ability to record, process, summarize and
report financial information; and  b)Any fraud,
whether or not material, that involves management or other employees who have a
significant role in the registrants internal control over financial reporting.  Date: August 8, 2008
  
  /s/ ROBERT MACKENZIERobert MackenzieDirector of Virgin Media Directors Limited,
  Corporate Director of NTL Fawnspring Limited, 
  the General Partner of South Hertfordshire United Kingdom
  Fund, Ltd.*
 
 *The Partnership has no principal
executive officer or principal financial officer. Robert Mackenzie and Robert
Gale are directors of Virgin Media Directors Limited, which is a Corporate
Director of NTL Fawnspring Limited, the General Partner of the Partnership.