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Welsh Government

Cookie Information

Table showing a list of non-essential cookies used on
Cookie Name Purpose Expires
Google Analytics cookie -ga Used by Google Analytics
to identify the user
Expires after 2 years
Google Analytics cookie _gid Used by Google Analytics
to identify the user
Expires after 1 day
Google Analytics cookie _gat_UA-* Used by Google analytics
to throttle the refresh rate
Expires after 1 minute
Functionality cookie bw-cookieMessage Used to show or hide
the cookie prompt
Expires after 10 hours
Twitter targeting / 
advertising cookies
Guest-id Used by twitter to
identify and track the
website visitor
Expires after 1 month
LinkedIn usermatchhistory Used by LinkedIn to
track visitors so that
more relevant ads
can be presented
based on visitor
Expires after 1 month
Facebook Pixel
(also known as the
Facebook Retargeting Pixel)
_fbp The code identifies
anonymous visitors
on the site and
matches the data with
the data available on
each user on Facebook.
Facebook reveals no
personal information
about the individuals
that they collect
through the pixel.
Further information
can be found on
Persistent cookie
ICC category:
Adnxs - uuid2 / _mkto_trk Targeting/Advertising Cookies:
These cookies are used to
deliver adverts more
relevant to you and your
interests. They are also
used to limit the number
of times you see an
advertisement as well as
help measure the
effectiveness of the
advertising campaign.
They are usually placed
by advertising networks
with the website operator's
permission. They remember
that you have visited a
website and this information
is shared with other
organisations such as
advertisers. Quite often
targeting or advertising
cookies will be linked to
site functionality provided
by the other organisation.
Data obtained by AppNexus
are owned by their customers.
Any data in the platform is
retained in non-aggregated
form for up to 12 months.
Aggregated data, which
AppNexus uses to create
reports and analysis, may
be stored for up to
three years.