Document:

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                                                                    EXHIBIT 4.17

                         BENEFICIAL OWNER ELECTION FORM

     I (we) acknowledge receipt of your letter and the enclosed materials
relating to the grant of transferable rights to purchase shares of common stock,
par value $0.01 per share, of NTL Incorporated (the "Company").

     I (we) hereby instruct you as follows.

     (CHECK THE APPLICABLE BOXES AND PROVIDE ALL REQUIRED INFORMATION)

     [ ]  Please exercise my (our) rights for shares of common stock as set
          forth below:

<Table>
<S>      <C>  <C>                                       <C>                  <C>  <C>                   <C>  <C>
         A.   BASIC SUBSCRIPTION PRIVILEGE              --------- shares      X   $[ ---------------]    =   $------------
                                                        (number of shares)
         B.   OVER-SUBSCRIPTION PRIVILEGE               --------- shares      X   $[ ---------------]    =   $------------
                                                        (number of shares)
         C.   TOTAL PURCHASE PRICE PAYMENT REQUIRED (ADD A AND B ABOVE)                                  =   $------------
</Table>

       I am (we are) making the total purchase price payment required in the
       following manner:

       [ ]  Payment in the following amount is enclosed: $________; or

       [ ]  Please deduct payment of $________ from the following account
            maintained by you as follows:

            (The total of the above two boxes must equal the total purchase
            price specified on line "C" above.)

         ------------------------------          ------------------------------
         Type of Account                           Account No.

     I (we) on my (our) own behalf, or on behalf of any person(s) on whose
     behalf, or under whose directions, I am (we are) signing this form:

       - acknowledge that I (we) received and read the prospectus relating to my
         (our) rights and that the terms and conditions of the rights as set
         forth in the prospectus have been incorporated by reference into this
         form;
       - irrevocably elect to purchase the number of shares of common stock
         indicated above upon the terms and conditions specified in the
         prospectus;
       - represent and warrant that I am a (we are) resident(s) of the United
         States or am (are) otherwise entitled to exercise, or direct the
         exercise of, my (our) rights as a non-U.S. holder falling within the
         permitted categories of persons described in the prospectus; and
       - agree that if I (we) fail to pay for the shares of common stock I (we)
         have elected to purchase, you may exercise any remedies available to
         you under law.

<Table>
<S>   <C>
[ ]   Please sell  ____________ of my (our) rights.
                  (number of rights)
[ ]   Please do not exercise my (our) rights for shares of common
      stock.
</Table>

Name of beneficial owner(s):
------------------------------------------------------------
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Signature of beneficial owner(s):
------------------------------------------------------------
------------------------------------------------------------

If you are signing in your capacity as a trustee, executor, administrator,
guardian, attorney-in-fact, agent, officer of a corporation or another acting in
a fiduciary or representative capacity, please provide the following
information:

Name:
----------------------------------------------------

Capacity:
-------------------------------------------------

Address (including Zip Code):
--------------------------
------------------------------------------------------------
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Telephone Number:
--------------------------------------<PAGE>

                                                                    EXHIBIT 4.18

                                NTL INCORPORATED

                              110 EAST 59TH STREET

                                   26TH FLOOR

                            NEW YORK, NEW YORK 10022

To Banks, Brokers, and Other Nominees:

     We are sending you this letter in connection with the grant to our
shareholders of transferable rights to purchase shares of our common stock at a
purchase price of $[     ] in cash per share. We have described the rights and
the rights offering in the enclosed prospectus dated [          ], 2003. The
rights are evidenced by rights certificate(s) registered in your name or the
name of your nominee(s).

     We are asking you to contact your clients for whom you hold our common
stock registered in your name or in the name of your nominee(s) to obtain their
instructions. If the beneficial owner wishes to purchase shares of our common
stock through the rights offering, you should complete the appropriate rights
certificates and submit them to the subscription agent with the proper payment.
If you hold shares of our common stock for the account(s) of more than one
client, you may aggregate your exercise of rights for all your clients, provided
that you identify the number of rights you are exercising for each client.
Please note that you do not have to provide the name or other identity of your
client. You may exercise such rights in the aggregate by completing the form
entitled "Nominee Holder Certification" which we have enclosed.

     If you hold shares of our common stock for clients whose address is outside
the United States, you must not attempt to exercise any rights on behalf of them
unless you or your client have provided evidence satisfactory to us that your
client falls within the permitted categories of UK or Cayman Islands persons
described in the prospectus or you provide evidence that is satisfactory to us,
like a legal opinion from local counsel, that it is otherwise lawful for your
client to receive and exercise rights. If you can provide us with this evidence,
your client will be entitled to receive and exercise rights. This evidence must
be provided to us on or prior to [          ], 2003.

     We have enclosed several copies of the following documents for your use:

     1.  The prospectus;

     2.  The "Instructions For Completion of Your NTL Incorporated Rights
Certificates;"

     3.  Guidelines for Certification of Taxpayer Identification Number on Form
W-9;

     4.  A form letter which may be sent to your clients for whose accounts you
         hold common stock registered in your name or the name of your nominee;

     5.  A "Beneficial Owner Election" form, on which you may obtain your
         client's instructions with regard to the rights;

     6.  A "Nominee Holder Certification" form;

     7.  A "Notice of Guaranteed Delivery;" and

     8.  A return envelope addressed to Continental Stock Transfer & Trust
         Company, the subscription agent.

     The rights offering will expire on [          ], 2003, unless extended by
us. Accordingly, we request that you act promptly. You may obtain additional
copies of the enclosed materials and may request assistance or information from
the information agent, D.F. King & Co., Inc. Please call (212) 269-5550.

                                         Very truly yours,

                                         NTL INCORPORATED

YOU ARE NOT AN AGENT OF CONTINENTAL STOCK TRANSFER & TRUST COMPANY, D.F. KING &
CO., INC., NTL INCORPORATED OR ANY OTHER PERSON WHO IS DEEMED TO BE MAKING OR
WHO IS MAKING OFFERS OF SHARES OF OUR COMMON STOCK IN THE RIGHTS OFFERING. YOU
ARE NOT AUTHORIZED TO MAKE ANY STATEMENTS ON THEIR OR OUR BEHALF, EXCEPT FOR
STATEMENTS MADE IN THE PROSPECTUS.
<PAGE>

                        [BANK, BROKER OR OTHER NOMINEE]

To Our Clients:

     We are sending you this letter because we hold shares of common stock, par
value $0.01 per share, of NTL Incorporated (the "Company") for you. The Company
has granted to its shareholders transferable rights to purchase shares of its
common stock.

     We have enclosed a copy of the following documents:

     1.  The prospectus dated [          ], 2003; and

     2.  A "Beneficial Owner Election Form" which you can use to tell us what
you would like to do with your rights.

     As described in the prospectus, you will receive [     ] transferable
rights for each share of the Company's common stock you own on [          ],
2003, the record date for the rights offering. Each right entitles you to
purchase one share of the Company's common stock at a purchase price of $[     ]
in cash per share. The Company refers to this as your basic subscription
privilege. In addition, if all rights granted to stockholders are not exercised,
you will have an over-subscription privilege that may entitle you to purchase
additional shares at the same purchase price per share as you paid in exercising
the basic subscription privilege. The number of shares you may receive under the
over-subscription privilege is subject to proration and the other limitations
described in the prospectus. Refer to the sections in the prospectus titled
"Questions and Answers About The Rights Offering" and "Rights Offering --
Subscription Privileges." Your election to exercise the over-subscription
privilege must be made at the same time you exercise your basic subscription
privilege.

     Please note that if you are outside the United States, no offer or
invitation to exercise rights and purchase shares is being made to you by the
Company, and you must not attempt to exercise or transfer any rights. However,
you may exercise or transfer your rights if, on or prior to [          ], 2003,
you provide evidence that is satisfactory to the Company that you fall within
the permitted categories of UK or Cayman Islands persons described in the
prospectus or you provide evidence that is satisfactory to the Company, like a
legal opinion from local counsel, that it is otherwise lawful for you to receive
and exercise rights.

     The materials enclosed are being sent to you as the beneficial owners of
the shares of common stock carried by us in your account but which are not
registered directly in your name. EXERCISES AND SALES OR TRANSFERS OF THE RIGHTS
MAY BE MADE ONLY BY US AS THE RECORD OWNER PURSUANT TO YOUR INSTRUCTIONS.
Accordingly, we request instructions as to whether you wish us to purchase any
shares of common stock or sell or transfer any of your rights. However, we urge
you to read the enclosed documents carefully before instructing us to exercise,
sell or otherwise transfer your rights.

     Your instructions should be sent to us in order to permit us to exercise or
sell your rights on your behalf in accordance with the terms of the rights
offering. YOUR RIGHT TO EXERCISE YOUR RIGHTS EXPIRES AT 5:00 P.M., NEW YORK CITY
TIME, ON [          ], 2003, UNLESS THE TIME PERIOD FOR EXERCISING YOUR RIGHTS
IS EXTENDED. ACCORDINGLY, WE REQUEST THAT YOU ACT PROMPTLY. Once you have
exercised a right, your exercise may not be revoked.

     If you wish to have us, on your behalf, exercise the rights for shares of
common stock or sell rights, please instruct us by completing, executing and
returning the enclosed form entitled "Beneficial Owner Election Form".

                                         Very truly yours,

                                         [Bank, Broker or Other Nominee]

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