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, 2004
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- ________
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
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 2004 To: 30 JUNE 2004
Number and class of
share(s) (amount of
Stock/debt security) not
issued under scheme at
end of the last period: 1,587,494 ORDINARY SHARES OF 3 1/3p EACH
Number of shares issued/
allotted under scheme
during period: 25,380 ORDINARY SHARES
Balance under scheme not
yet issued/allotted at end
of period: 4,562,114 ORDINARY SHARES
Number and class of share(s)
(amount of stock/debt 3,000,000 ORDINARY SHARES OF 3 1/3p EACH
securities) originally DATED 29 SEPTEMBER 2000
listed and the date of 3,000,000 ORDINARY SHARES OF 3 1/3 p EACH
admission: DATED 28 MAY 2004
Please confirm total number of
shares in issue at the end of the
period in order for us to update
our records 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Name of company: SPIRENT PLC
Name of scheme: U.S. EMPLOYEE STOCK PURCHASE PLAN
Period of return: From: 01 JANUARY 2004 To: 30 JUNE 2004
Number and class of share(s)
(amount of Stock/debt
security) not issued under
scheme at end of the
last period: 4,955,036 ORDINARY SHARES OF 3 1/3p EACH
Number of shares issued/
allotted under scheme
during period: 2,969,272 ORDINARY SHARES
Balance under scheme not
yet issued/allotted at
end of period: 1,985,764 ORDINARY SHARES
Number and class of share(s)
(amount of stock/debt 435,000 ORDINARY SHARES OF 3 1/3p EACH
securities) originally ADMITTED 5 JUNE 2001
listed and the date of
admission: 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 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Name of company: SPIRENT PLC
Name of scheme: GLOBAL ALL EMPLOYEE SHARE PURCHASE PLAN
Period of return: From: 01 JANUARY 2004 To: 30 JUNE 2004
Number and class of share(s)
(amount of Stock/debt
security) not issued under
scheme at end of the
last period: 700,052 ORDINARY SHARES OF 3 1/3p EACH
Number of shares issued/
allotted under scheme 368,008 ORDINARY SHARES
during period:
Balance under scheme not
yet issued/allotted at end
of period: 332,044 ORDINARY SHARES
Number and class of share(s)
(amount of stock/debt
securities) originally
listed and the date of 1,000,000 ORDINARY SHARES OF 3 1/3p EACH
admission: DATED 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 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
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 2004 To: 30 JUNE 2004
Number and class of share(s)
(amount of Stock/debt 6,276,684 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: 290,171 ORDINARY SHARES
Balance under scheme not
yet issued/allotted at end 5,986,513 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 DATED 03/09/1999
listed 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 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Name of company: SPIRENT PLC
Name of scheme: ZARAK AMENDED AND RESTATED STOCK OPTION PLAN
Period of return: From: 01 JANUARY 2004 To: 30 JUNE 2004
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 3,895,474 ORDINARY SHARES OF 3 1/3p EACH
securities) originally DATED 14 NOVEMBER 2000
listed 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 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Name of company: SPIRENT PLC
Name of scheme: SPIRENT SAVINGS RELATED SHARE OPTION SCHEME
Period of return: From: 01 JANUARY 2004 To: 30 JUNE 2004
Number and class of share(s)
(amount of Stock/debt 198,935 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: 12,580 ORDINARY SHARES
Balance under scheme not yet
issued/allotted at end 186,355 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt 200,000 ORDINARY SHARES OF 3 1/3p EACH
securities) originally DATED 31 DECEMBER 2003
listed 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 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Name of company: SPIRENT PLC
Name of scheme: SPIRENT STOCK INCENTIVE PLAN
(FORMERLY KNOWN AS SPIRENT STOCK OPTION PLAN)
Period of return: From: 01 JANUARY 2004 To: 30 JUNE 2004
Number and class of share(s)
(amount of Stock/debt 7,013,601 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: 1,380,667 ORDINARY SHARES
Balance under scheme not yet
issued/allotted at end 5,632,934 ORDINARY SHARES
of period:
Number and class of share(s)
(amount of stock/debt 3,720,930 ORDINARY SHARES OF 3 1/3p EACH
securities) originally DATED 1 OCTOBER 2003
listed and the date of
admission: 3,703,703 ORDINARY SHARES OF 3 1/3p EACH
DATED 2 OCTOBER 2003
Please confirm total number of
shares in issue at the end of the
period in order for us to update
our records 953,681,257
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:
SCHEDULE 5
BLOCK LISTING SIX MONTHLY RETURN
To: Listing Applications
UK Listing Authority
Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Name of company: SPIRENT PLC
Name of scheme: CAW AMENDED AND RESTATED STOCK OPTION PLAN
Period of return: From: 01 JANUARY 2004 To: 30 JUNE 2004
Number and class of share(s)
(amount of Stock/debt
security) not issued
under scheme at end of
the last period: 1,180,631 ORDINARY SHARES OF 3 1/3p EACH
Number of shares issued/
allotted under scheme
during
period: 251,024 ORDINARY SHARES
Balance under scheme not yet
issued/allotted at end
of period: 929,607 ORDINARY SHARES
Number and class of share(s)
(amount of stock/debt 1,300,000 ORDINARY SHARES OF 3 1/3p EACH
securities) originally DATED 15 AUGUST 2002
listed and the date of
admission: 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 953,681,257
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:
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 6 July 2004 By ____/s/ Luke Thomas____
(Signature)*