Blocklisting Interim Review

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

GlaxoSmithKline Share Option Plan - Ordinary Shares

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

2,092,426

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

832,235

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

1,260,191

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

GlaxoSmithKline Share Option Plan - ADS

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

4,007,856

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

1,555,344

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

2,452,512

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

Glaxo Wellcome UK Share Option Scheme

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

5,119,750

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

0

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

5,119,750

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

Glaxo Wellcome International Share Option Scheme

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

13,267,156

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

0

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

13,267,156

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

Glaxo Wellcome 1999 Share Option Plan

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

1,040,000

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

0

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

1,040,000

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

SmithKline Beecham 1989 Executive Share Option Plan - Approved - Ordinary Shares

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

163,606

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

0

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

163,606

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

SmithKline Beecham 1989 Executive Share Option Plan - Unapproved - ADS

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

275,420

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

0

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

275,420

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

SmithKline Beecham 1989 Executive Share Option Plan - Unapproved - Ordinary

Period of return:

From:

1 November 2010

To:

30 May 2011

Balance of unallotted securities under scheme(s) from previous return:

100,000

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

0

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

100,000

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000

Name of applicant:

GlaxoSmithKline plc

Name of scheme:

GlaxoSmithKline Savings Related Share Option Scheme

Period of return:

From:

1 November 2010

To:

30 April 2011

Balance of unallotted securities under scheme(s) from previous return:

4,263,507

Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):

0

Less: Number of securities issued/allotted under scheme(s) during period (see LR3.5.7G):

1,172,784

Equals: Balance under scheme(s) not yet issued/allotted at end of period:

3,090,723

Name of contact:

Victoria Whyte

Telephone number of contact:

020 8047 5000