**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 SouthHertfordshire United Kingdom Fund, Ltd.

2.                 Based on my knowledge, this report does not contain any untruestatement of a material fact or omit to state a material fact necessary to makethe statements made, in light of the circumstances under which such statementswere made, not misleading with respect to the period covered by this report.

3.                 Based on my knowledge, the financial statements, and other financialinformation included in this report, fairly present in all material respectsthe financial condition, results of operations and cash flows of the registrantas of, and for, the periods presented in this report.

4.                 The registrant’s other certifying officer and I are responsible forestablishing and maintaining disclosure controls and procedures (as defined inExchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant andhave:

a)               Designed such disclosure controls and procedures, or caused suchdisclosure controls and procedures to be designed under our supervision, toensure that material information relating to the registrant, including itsconsolidated subsidiaries, is made known to us by others within those entities,particularly during the period in which this report is being prepared;

b)              [Omitted pursuant to SEC Release No. 33-8238];

c)               Evaluated the effectiveness of the registrant’s disclosure controlsand procedures and presented in this report our conclusions about theeffectiveness of the disclosure controls and procedures, as of the end of theperiod covered by this report based on such evaluation; and

d)              Disclosed in this report any change in the registrant’s internalcontrol over financial reporting that occurred during the registrant’s firstfiscal quarter that has materially affected, or is reasonably likely tomaterially 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 financialreporting, to the registrant’s auditors and the audit committee of registrant’sboard of directors (or persons performing the equivalent functions):

a)               All significant deficiencies and material weaknesses in the designor operation of internal control over financial reporting which are reasonablylikely to adversely affect the registrant’s ability to record, process,summarize and report financial information; and

b)              Anyfraud, whether or not material, that involves management or other employees whohave a significant role in the registrant’s internal control over financialreporting.
| Date: August 10, 2007 | /s/ ROBERT  MACKENZIE                                                                                                                                                           |
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|                       | Robert Mackenzie                                                                                                                                                                |
|                       | *Director of Virgin Media Directors  Limited,  Corporate Director of NTL Fawnspring Limited,  the General Partner of South Hertfordshire United Kingdom  Fund, Ltd.** |

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*                    The Partnership has no Chief Executive Officer or Chief FinancialOfficer. Robert Mackenzie and Robert Gale are directors of Virgin MediaDirectors Limited, which is a Corporate Director of NTL Fawnspring Limited, theGeneral Partner of the Partnership.

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