Blocklisting Interim Review

BLOCKLISTING INTERIM REVIEW

1. NAME OF COMPANY:

GW PHARMACEUTICALS PLC

2. NAME OF SCHEME:

GW PHARMACEUTICALS APPROVED SHARE OPTION SCHEME 2001

3. PERIOD OF RETURN:

FROM: 19 AUGUST 2014 TO: 17 FEBRUARY 2015

4. NUMBER AND CLASS OF SHARES(S) (AMOUNT OF STOCK/DEBT SECURITY) NOT ISSUED UNDER SCHEME AT END OF THE LAST PERIOD:

155,950 ORDINARY SHARES OF 0.1P EACH

5. NUMBER OF SHARES ISSUED/ALLOTTED UNDER SCHEME DURING PERIOD:

36,900 ORDINARY SHARES OF 0.1P EACH

6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED AT END OF PERIOD:

119,050 ORDINARY SHARES OF 0.1P EACH

7. NUMBER AND CLASS OF SHARE(S) (AMOUNT OF STOCK/DEBT SECURITIES) ORIGINALLY LISTED AND THE DATE OF ADMISSION:

516,558 ORDINARY SHARES OF 0.1P EACH ON 21 JULY 2004

200,000 ORDINARY SHARES OF 0.1P EACH ON 23 FEBRUARY 2011

200,000 ORDINARY SHARES OF 0.1P EACH ON 29 NOVEMBER 2013

122,613 ORDINARY SHARES OF 0.1P EACH ON 9 JUNE 2014

PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD IN ORDER FOR US TO UPDATE OUR RECORDS.

237,155,642 ORDINARY SHARES OF 0.1P EACH

BLOCKLISTING INTERIM REVIEW

1. NAME OF COMPANY:

GW PHARMACEUTICALS PLC

2. NAME OF SCHEME:

GW PHARMACEUTICALS UNAPPROVED SHARE OPTION SCHEME 2001

3. PERIOD OF RETURN:

FROM: 19 AUGUST 2014 TO: 17 FEBRUARY 2015

4. NUMBER AND CLASS OF SHARES(S) (AMOUNT OF STOCK/DEBT SECURITY) NOT ISSUED UNDER SCHEME AT END OF THE LAST PERIOD:

119,387 ORDINARY SHARES OF 0.1P EACH

5. NUMBER OF SHARES ISSUED/ALLOTTED UNDER SCHEME DURING PERIOD:

306,936 ORDINARY SHARES OF 0.1P EACH

6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED AT END OF PERIOD:

312,451 ORDINARY SHARES OF 0.1P EACH

7. NUMBER AND CLASS OF SHARE(S) (AMOUNT OF STOCK/DEBT SECURITIES) ORIGINALLY LISTED AND THE DATE OF ADMISSION:

1,279,192 ORDINARY SHARES OF 0.1P EACH ON 21 JULY 2004

500,000 ORDINARY SHARES OF 0.1P EACH ON 24 MAY 2011

800,000 ORDINARY SHARES OF 0.1P EACH ON 29 NOVEMBER 2013

500,000 ORDINARY SHARES OF 0.1P EACH ON 9 JUNE 2014

500,000 ORDINARY SHARES OF 0.1P EACH ON 9 JANUARY 2015

PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD IN ORDER FOR US TO UPDATE OUR RECORDS.

237,155,642 ORDINARY SHARES OF 0.1P EACH

BLOCKLISTING INTERIM REVIEW

1. NAME OF COMPANY:

GW PHARMACEUTICALS PLC

2. NAME OF SCHEME:

GW PHARMACEUTICALS EXECUTIVE SHARE OPTION SCHEME

3. PERIOD OF RETURN:

FROM: 19 AUGUST 2014 TO: 17 FEBRUARY 2015

4. NUMBER AND CLASS OF SHARES(S) (AMOUNT OF STOCK/DEBT SECURITY) NOT ISSUED UNDER SCHEME AT END OF THE LAST PERIOD:

249,050 ORDINARY SHARES OF 0.1P EACH

5. NUMBER OF SHARES ISSUED/ALLOTTED UNDER SCHEME DURING PERIOD:

40,500 ORDINARY SHARES OF 0.1P EACH

6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED AT END OF PERIOD:

208,550 ORDINARY SHARES OF 0.1P EACH.

7. NUMBER AND CLASS OF SHARE(S) (AMOUNT OF STOCK/DEBT SECURITIES) ORIGINALLY LISTED AND THE DATE OF ADMISSION:

1,388,375 ORDINARY SHARES OF 0.1P EACH ON 7 OCTOBER 2003

300,000 ORDINARY SHARES OF 0.1P EACH ON 23 APRIL 2008

400,000 ORDINARY SHARES OF 0.1P EACH ON 18 JANUARY 2010

400,000 ORDINARY SHARES OF 0.1P EACH ON 23 FEBRUARY 2011

300,000 ORDINARY SHARES OF 0.1P EACH ON 24 MAY 2011

168,650 ORDINARY SHARES OF 0.1P EACH ON 9 JUNE 2014

PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD IN ORDER FOR US TO UPDATE OUR RECORDS.

237,155,642 ORDINARY SHARES OF 0.1P EACH

1. NAME OF COMPANY:

GW PHARMACEUTICALS PLC

2. NAME OF SCHEME:

GW PHARMACEUTICALS LONG TERM INCENTIVE PLAN 2008

3. PERIOD OF RETURN:

FROM: 19 AUGUST 2014 TO: 17 FEBRUARY 2015

4. NUMBER AND CLASS OF SHARES(S) (AMOUNT OF STOCK/DEBT SECURITY) NOT ISSUED UNDER SCHEME AT END OF THE LAST PERIOD:

1,014,451 ORDINARY SHARES OF 0.1P EACH

5. NUMBER OF SHARES ISSUED/ALLOTTED UNDER SCHEME DURING PERIOD:

230,000 ORDINARY SHARES OF 0.1P EACH

6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED AT END OF PERIOD:

784,451 ORDINARY SHARES OF 0.1P EACH.

7. NUMBER AND CLASS OF SHARE(S) (AMOUNT OF STOCK/DEBT SECURITIES) ORIGINALLY LISTED AND THE DATE OF ADMISSION:

600,000 ORDINARY SHARES OF 0.1P EACH ON 23 FEBRUARY 2011

300,000 ORDINARY SHARES OF 0.1P EACH ON 29 NOVEMBER 2013

500,000 ORDINARY SHARES OF 0.1P EACH ON 9 JUNE 2014

PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD IN ORDER FOR US TO UPDATE OUR RECORDS.

237,155,642 ORDINARY SHARES OF 0.1P EACH

For further information, please contact:

Adam George, Company Secretary, GW Pharmaceuticals plc

Telephone: +44 (0)1223 266800

James Steel / Oliver Jackson, Nominated Adviser, Peel Hunt LLP

Telephone: +44 (0)20 7418 8900