ProxySettings not enabling via GPO

Hi all,

The company I am working for has recently just purchased a new FW and a new proxyserver setting needs to be applied to all machines within the company, I've set up a GPO with the following details which is in the root of the domain:

Proxy Settings
Data collected on: 06/03/2014 11:19:52 show all

Generalhide
Detailsshow
Domain sedsol.net
Owner SEDSOL\Domain Admins
Created 05/03/2014 17:56:08
Modified 06/03/2014 11:13:46
User Revisions 40 (AD), 40 (sysvol)
Computer Revisions 6 (AD), 6 (sysvol)
Unique ID {E2E3DA89-F9E9-457C-AA30-43DC0D14AE29}
GPO Status Enabled

Linksshow
Location Enforced Link Status Path
sedsol Yes Enabled sedsol.net
London Yes Enabled sedsol.net/London

This list only includes links in the domain of the GPO.
Security Filteringshow
The settings in this GPO can only apply to the following groups, users, and computers:Name
NT AUTHORITY\Authenticated Users

Delegationshow
These groups and users have the specified permission for this GPOName Allowed Permissions Inherited
NT AUTHORITY\Authenticated Users Read (from Security Filtering) No
NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS Read No
NT AUTHORITY\SYSTEM Edit settings, delete, modify security No
SEDSOL\Domain Admins Edit settings, delete, modify security No
SEDSOL\Enterprise Admins Edit settings, delete, modify security No

Computer Configuration (Enabled)hide
Preferenceshide
Windows Settingshide
Registryhide
ProxyEnable (Order: 1)hide
Generalhide
Action Update
PropertiesHive HKEY_CURRENT_USER (HKU\.DEFAULT)
Key path Software\Microsoft\Windows\CurrentVersion\Internet Settings
Value name ProxyEnable
Value type REG_DWORD
Value data 0x1 (1)

Commonhide
OptionsStop processing items on this extension if an error occurs on this item No
Remove this item when it is no longer applied No
Apply once and do not reapply No

ProxyServer (Order: 2)hide
Generalhide
Action Update
PropertiesHive HKEY_CURRENT_USER (HKU\.DEFAULT)
Key path Software\Microsoft\Windows\CurrentVersion\Internet Settings
Value name ProxyServer
Value type REG_SZ
Value data proxy1.uk.webscanningservice.com:3128

Commonhide
OptionsStop processing items on this extension if an error occurs on this item No
Remove this item when it is no longer applied No
Apply once and do not reapply No

ProxyOverride (Order: 3)hide
Generalhide
Action Update
PropertiesHive HKEY_CURRENT_USER (HKU\.DEFAULT)
Key path Software\Microsoft\Windows\CurrentVersion\Internet Settings
Value name ProxyOverride
Value type REG_SZ
Value data http://*.sedsol.net,https://*.sedsol.net 

Commonhide
OptionsStop processing items on this extension if an error occurs on this item No
Remove this item when it is no longer applied No
Apply once and do not reapply No

User Configuration (Enabled)hide
Policieshide
Windows Settingshide
Internet Explorer Maintenancehide
Connection/Proxy Settingshide
Enable proxy settings
Protocol Server Port
HTTP proxy1.uk.webscanningservice.com 3128
Secure proxy1.uk.webscanningservice.com 3128
FTP proxy1.uk.webscanningservice.com 3128
Gopher proxy1.uk.webscanningservice.com 3128
Socks proxy1.uk.webscanningservice.com 3128
 
Exceptions: Do not use proxy server for addresses beginning with sps,  
Do not use proxy server for local (intranet) addresses Enabled

Preferenceshide
Control Panel Settingshide
Internet Settingshide
Internet Explorer 8: Internet Explorer 8 (Order: 1)hide
Connectionshide
Dial-up settingsConnection behavior Never dial a connection

Commonhide
OptionsStop processing items on this extension if an error occurs on this item No
Run in logged-on user's security context (user policy option) No
Remove this item when it is no longer applied No
Apply once and do not reapply No

Internet Explorer 7: Internet Explorer 7 (Order: 2)hide
Connectionshide
Dial-up settingsConnection behavior Never dial a connection

Commonhide
OptionsStop processing items on this extension if an error occurs on this item No
Run in logged-on user's security context (user policy option) No
Remove this item when it is no longer applied No
Apply once and do not reapply No

Internet Explorer 5 and 6: Internet Explorer 5 and 6 (Order: 3)hide
Generalhide
HistoryDays to keep pages in history 20 days

Connectionshide
Dial-up settingsConnection behavior Never dial a connection

Commonhide
OptionsStop processing items on this extension if an error occurs on this item No
Run in logged-on user's security context (user policy option) No
Remove this item when it is no longer applied No
Apply once and do not reapply No

If the user didn't have the old proxy server settings turned on, Then the new ones entries are there but not enabled, can someone assist?