diff --git a/images/reference/bitbucket.svg b/images/reference/bitbucket.svg
new file mode 100644
index 00000000..ff35c1f8
--- /dev/null
+++ b/images/reference/bitbucket.svg
@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   viewBox="0 0 62.421586 56.130333"
+   version="1.1"
+   id="svg39"
+   sodipodi:docname="bitbucket.svg"
+   width="62.421585"
+   height="56.130333"
+   inkscape:version="0.92.1 r15371">
+  <metadata
+     id="metadata43">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title>Bitbucket-blue</dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview41"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:zoom="1.116241"
+     inkscape:cx="88.358293"
+     inkscape:cy="-1.357562"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg39" />
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+     id="defs9">
+    <style
+       id="style2">.cls-1{fill:#253858;}.cls-2{fill:none;}.cls-3{fill:#2684ff;}.cls-4{fill:url(#New_Gradient_Swatch_1);}</style>
+    <linearGradient
+       id="New_Gradient_Swatch_1"
+       x1="64.010002"
+       y1="30.27"
+       x2="32.990002"
+       y2="54.48"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="translate(0.02579294,-6.2598336)">
+      <stop
+         offset="0.18"
+         stop-color="#0052cc"
+         id="stop4" />
+      <stop
+         offset="1"
+         stop-color="#2684ff"
+         id="stop6" />
+    </linearGradient>
+  </defs>
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+     id="title11">Bitbucket-blue</title>
+  <polygon
+     class="cls-2"
+     points="24.7,43.51 37.75,43.51 40.9,25.12 21.23,25.12 "
+     id="polygon31"
+     style="fill:none"
+     transform="translate(0.02579294,-6.2598336)" />
+  <path
+     class="cls-3"
+     d="M 2.0257929,1.6632531e-4 A 2,2 0 0 0 0.02579294,2.3201663 L 8.5157929,53.860167 a 2.72,2.72 0 0 0 2.6600001,2.27 h 40.73 a 2,2 0 0 0 2,-1.68 l 8.49,-52.1200007 a 2,2 0 0 0 -2,-2.31999997 z M 37.775793,37.250167 h -13 l -3.52,-18.39 h 19.67 z"
+     id="path33"
+     inkscape:connector-curvature="0"
+     style="fill:#2684ff" />
+  <path
+     class="cls-4"
+     d="m 59.695793,18.860167 h -18.77 l -3.15,18.39 h -13 l -15.3500001,18.22 a 2.71,2.71 0 0 0 1.7500001,0.66 h 40.74 a 2,2 0 0 0 2,-1.68 z"
+     id="path35"
+     style="fill:url(#New_Gradient_Swatch_1)"
+     inkscape:connector-curvature="0" />
+</svg>
diff --git a/images/reference/digidentity.jpg b/images/reference/digidentity.jpg
new file mode 100644
index 00000000..a3954a2a
Binary files /dev/null and b/images/reference/digidentity.jpg differ
diff --git a/images/reference/index.md b/images/reference/index.md
index c2ec3340..efbf68d5 100644
--- a/images/reference/index.md
+++ b/images/reference/index.md
@@ -43,12 +43,12 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/gitlab.svg" width="256" />	| <img src="/images/reference/gitlab.svg" width="256" />	| https://about.gitlab.com/press/	|
 | <img src="/images/svg/html5.svg" width="256" />	| <img src="/images/reference/html5.svg" width="256" />	| https://www.w3.org/html/logo/	|
 | <img src="/images/svg/meetup.svg" width="256" />	| <img src="/images/reference/meetup.jpeg" width="256" />	| https://a248.e.akamai.net/secure.meetupstatic.com/photos/event/8/f/1/d/highres_454596637.jpeg	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
-| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/line.svg" width="256" />	| <img src="/images/reference/line.svg" width="256" />	| https://line.me/en/logo	|
+| <img src="/images/svg/lastpass.svg" width="256" />	| <img src="/images/reference/lastpass.svg" width="256" />	| https://lastpass.com/press-room/	|
+| <img src="/images/svg/windows.svg" width="256" />	| <img src="/images/reference/windows.png" width="256" />	| https://query.prod.cms.rt.microsoft.com/cms/api/am/binary/RE1voQq	|
+| <img src="/images/svg/digidentity.svg" width="256" />	| <img src="/images/reference/digidentity.jpg" width="256" />	| https://www.digidentity.eu/en/blog/	|
+| <img src="/images/svg/ubuntu.svg" width="256" />	| <img src="/images/reference/ubuntu.svg" width="256" />	| https://design.ubuntu.com/brand/ubuntu-logo/	|
+| <img src="/images/svg/bitbucket.svg" width="256" />	| <img src="/images/reference/bitbucket.svg" width="256" />	| https://www.atlassian.com/company/news/press-kit	|
 | <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
 | <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
 | <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
diff --git a/images/reference/lastpass.svg b/images/reference/lastpass.svg
new file mode 100644
index 00000000..9825e976
--- /dev/null
+++ b/images/reference/lastpass.svg
@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 19.2.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:sketch="http://www.bohemiancoding.com/sketch/ns"
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Layer_1"
+   x="0px"
+   y="0px"
+   viewBox="0 0 85.37484 41.400002"
+   xml:space="preserve"
+   sodipodi:docname="lastpass.svg"
+   width="85.37484"
+   height="41.400002"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata30"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title>LastPass_Color</dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs28" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview26"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:zoom="0.99431818"
+     inkscape:cx="176"
+     inkscape:cy="26"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="Layer_1" /><style
+     type="text/css"
+     id="style2">
+	.st0{fill:#D32D27;}
+</style><title
+     id="title4">LastPass_Color</title><desc
+     id="desc6">Created with Sketch.</desc><path
+     style="fill:#d32d27"
+     inkscape:connector-curvature="0"
+     d="m 80.77484,2.3 c 0,-1.3 1,-2.3 2.3,-2.3 v 0 c 1.3,0 2.3,1 2.3,2.3 v 36.8 c 0,1.3 -1,2.3 -2.3,2.3 v 0 c -1.3,0 -2.3,-1 -2.3,-2.3 z"
+     class="st0"
+     sketch:type="MSShapeGroup"
+     id="Line" /><g
+     sketch:type="MSShapeGroup"
+     transform="translate(0,13.789381)"
+     id="Dots"><circle
+       style="fill:#d32d27"
+       r="7.8000002"
+       cy="7.8000002"
+       cx="7.8000002"
+       class="st0"
+       id="Oval-74" /><circle
+       style="fill:#d32d27"
+       r="7.8000002"
+       cy="7.8000002"
+       cx="33.799999"
+       class="st0"
+       id="Oval-74_1_" /><circle
+       style="fill:#d32d27"
+       r="7.8000002"
+       cy="7.8000002"
+       cx="59.799999"
+       class="st0"
+       id="Oval-74_2_" /></g></svg>
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diff --git a/images/reference/line.svg b/images/reference/line.svg
new file mode 100644
index 00000000..b1024a17
--- /dev/null
+++ b/images/reference/line.svg
@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg29"
+   xml:space="preserve"
+   width="191.03206"
+   height="191.03738"
+   viewBox="0 0 191.03206 191.03739"
+   sodipodi:docname="line.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata35"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs33"><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath65"><path
+         d="M 0,595.28 H 841.89 V 0 H 0 Z"
+         id="path63"
+         inkscape:connector-curvature="0" /></clipPath></defs><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
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+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
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+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g37" /><g
+     id="g37"
+     inkscape:groupmode="layer"
+     inkscape:label="LINE_Icon_RGB"
+     transform="matrix(1.3333333,0,0,-1.3333333,1.2194059e-6,191.03739)"><g
+       id="g89"
+       transform="translate(117.36002,143.27802)"><path
+         d="m 0,0 h -91.246 c -14.327,0.019 -26.093,-11.583 -26.114,-25.914 v -91.246 c -0.018,-14.332 11.585,-26.099 25.914,-26.118 h 91.247 c 14.33,-0.018 26.091,11.583 26.113,25.917 v 91.247 C 25.934,-11.782 14.333,-0.02 0,0"
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+       id="g93"
+       transform="translate(123.56882,77.938925)"><path
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diff --git a/images/reference/ubuntu.svg b/images/reference/ubuntu.svg
new file mode 100644
index 00000000..f63d8157
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+++ b/images/reference/ubuntu.svg
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+<svg version="1.1" id="circle_of_friends__x5F__white_x26_orange"
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+	 height="425.197px" viewBox="0 0 425.197 425.197" enable-background="new 0 0 425.197 425.197" xml:space="preserve">
+<g>
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