UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of July, 2003
SPIRENT plc
_____________________________________________________________________
(Translation of registrant's name into English)
Spirent House, Crawley Business Quarter, Fleming Way, Crawley,
West Sussex RH10 9QL, UK.
_____________________________________________________________________
(Address of principal executive offices)
Indicate by check mark whether the registrant files or will file annual reports
under cover Form 20-F or Form 40-F.
Form 20-F X Form 40-F.....
Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes ..... No X
If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82- ________
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Old Broad Street
London
EC2N 1HP
(020 7588 6057)
Name of company: SPIRENT PLC
Name of scheme: CAW AMENDED AND RESTATED STOCK OPTION PLAN
Period of return: From: 01 JANUARY 2003 To: 30 JUNE 2003
Number and class of share(s)
(amount of Stock/debt 1,391,650 ORDINARY SHARES OF 3 1/3p EACH
security) not issued under scheme
at end of the last period:
Number of shares issued/allotted
under scheme during 186,486 ORDINARY SHARES
period:
Balance under scheme not yet
issued/allotted at end 1,205,164 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt securities)
originally listed and the date of 1,300,000 ORDINARY SHARES OF 3 1/3p EACH
admission: DATED 15 AUGUST 2002
115,394 ORDINARY SHARES OF 3 1/3P EACH
DATED 28 AUGUST 2002
Please confirm total number of shares in issue at the end of the period in order
for us to update our records
943,163,786
Contact for queries: Address: Spirent plc
Name: Michael Anscombe Spirent House
Telephone: 01293 767676 Crawley Business Quarter
Fleming Way
Crawley, RH10 9QL
Person making return
Name: Michael Anscombe
Position: Assistant Company Secretary
Signature:
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Old Broad Street
London
EC2N 1HP
(020 7588 6057)
ALL FIGURES HAVE BEEN REVISED FOR THE 3:1 SHARE SPLIT ON 11 MAY 2000
Name of company: SPIRENT PLC
Name of scheme: SPIRENT EXECUTIVE SHARE OPTION SCHEME
Period of return: From: 01 JANUARY 2003 To: 3O JUNE 2003
Number and class of share(s)
(amount of Stock/debt 1,587,494 ORDINARY SHARES OF 3 1/3p EACH
security) not issued under scheme
at end of the last period:
Number of shares issued/allotted
under scheme during 0 ORDINARY SHARES
period:
Balance under scheme not yet
issued/allotted at end 1,587,494 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt 3,000,000 ORDINARY SHARES OF 3 1/3p
securities) originally listed EACH DATED 29/09/2000
and the date of admission:
Please confirm total number of shares in issue at the end of the period in order
for us to update our records
943,163,786
Contact for queries: Address: Spirent plc
Name: Michael Anscombe Spirent House
Telephone: 01293 767676 Crawley Business Quarter
Fleming Way
Crawley, RH10 9QL
Person making return
Name: Michael Anscombe
Position: Assistant Company Secretary
Signature:
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Old Broad Street
London
EC2N 1HP
(020 7588 6057)
Name of company: SPIRENT PLC
Name of scheme: U.S. EMPLOYEE STOCK PURCHASE PLAN
Period of return: From: 01 JANUARY 2003 To: 30 JUNE 2003
Number and class of share(s)
(amount of Stock/debt 7,960,678 ORDINARY SHARES OF 3 1/3p
security) not issued under EACH
scheme at end of the last period:
Number of shares issued/allotted
under scheme during period: 2,980,538 ORDINARY SHARES
Balance under scheme not yet
issued/allotted at end 4,980,140 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt securities)
originally listed and the date of 435,000 ORDINARY SHARES OF 3 1/3P EACH
admission: ADMITTED 5 JUNE 2001
3,500,000 ORDINARY SHARES OF 3 1/3p EACH
ADMITTED 1 NOVEMBER 2001
7,000,000 ORDINARY SHARES OF 3 1/3P EACH
ADMITTED 18 NOVEMBER 2002
Please confirm total number of shares in issue at the end of the period in order
for us to update our records
943,163,786
Contact for queries: Address: Spirent plc
Name: Michael Anscombe Spirent House
Telephone: 01293 767676 Crawley Business Quarter
RH10 9QL
Person making return
Name: Michael Anscombe
Position: Assistant Company Secretary
Signature:
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Old Broad Street
London
EC2N 1HP
(020 7588 6057)
Name of company: SPIRENT PLC
Name of scheme: GLOBAL ALL EMPLOYEE SHARE PURCHASE PLAN
Period of return: From: 01 JANUARY 2003 To: 30 JUNE 2003
Number and class of share(s)
(amount of Stock/debt 1,000,000 ORDINARY SHARES OF 3 1/3p EACH
security) not issued under
scheme at end of the last period:
Number of shares issued/allotted
under scheme during period: 299,948 ORDINARY SHARES
Balance under scheme not yet
issued/allotted at end 700,052 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt 1,000,000 ORDINARY SHARES OF 3 1/3p EACH
securities) originally listed DATED 18 NOVEMBER 2002
and the date of admission:
Please confirm total number of shares in issue at the end of the period in order
for us to update our records
943,163,786
Contact for queries: Address: Spirent plc
Name: Michael Anscombe Spirent House
Telephone: 01293 767676 Crawley Business Quarter
RH10 9QL
Person making return
Name: Michael Anscombe
Position: Assistant Company Secretary
Signature:
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Old Broad Street
London
EC2N 1HP
(020 7588 6057)
ALL FIGURES HAVE BEEN REVISED FOR THE 3:1 SHARE SPLIT ON 11 MAY 2000
Name of company: SPIRENT PLC
Name of scheme: NETCOM AMENDED AND RESTATED STOCK OPTION PLAN
Period of return: From: 01 JANUARY 2003 To: 30 JUNE 2003
Number and class of share(s)
(amount of Stock/debt 6,925,458 ORDINARY SHARES OF 3 1/3p EACH
security) not issued under
scheme at end of the last period:
Number of shares issued/allotted
under scheme during 258,786 ORDINARY SHARES
period:
Balance under scheme not yet
issued/allotted at end 6,666,672 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt 3,291,399 ORDINARY SHARES OF 3 1/3p EACH
securities) originally listed DATED 03/09/1999
and the date of admission: 1,739,130 ORDINARY SHARES OF 3 1/3p EACH
DATED 8 JULY 2002
6,722,689 ORDINARY SHARES OF 3 1/3P EACH
DATED 8 OCTOBER 2002
Please confirm total number of shares in issue at the end of the period in order
for us to update our records
943,163,786
Contact for queries: Address: Spirent plc
Name: Michael Anscombe Spirent House
Telephone: 01293 767676 Crawley Business Quarter
Fleming Way Crawley,
RH10 9QL
Person making return
Name: Michael Anscombe
Position: Assistant Company Secretary
Signature:
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Old Broad Street
London
EC2N 1HP
(020 7588 6057)
Name of company: SPIRENT PLC
Name of scheme: ZARAK AMENDED AND RESTATED STOCK OPTION PLAN
Period of return: From: 01 JANUARY 2003 To: 30 JUNE 2003
Number and class of share(s)
(amount of Stock/debt 2,690,996 ORDINARY SHARES OF 3 1/3p EACH
security) not issued under
scheme at end of the last period:
Number of shares issued/allotted
under scheme during 0 ORDINARY SHARES
period:
Balance under scheme not yet
issued/allotted at end 2,690,996 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt
securities) originally listed 3,895,474 ORDINARY SHARES OF 3 1/3p EACH
and the date of admission: DATED 14 NOVEMBER 2000
Please confirm total number of shares in issue at the end of the period in order
for us to update our records
943,163,786
Contact for queries: Address: Spirent plc
Name: Michael Anscombe Spirent House
Telephone: 01293 767676 Crawley Business Quarter
Fleming Way
Crawley, RH10 9QL
Person making return
Name: Michael Anscombe
Position: Assistant Company Secretary
Signature:
Signatures
Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.
______LUKE THOMAS______
(Registrant)
Date___10 July 2003____ By ____/s/ Luke Thomas____
(Signature)*