Sorted. This needs to be added to settings.xml
<mirror>
<id>archiva.snapshots</id>
<url>http://localhost:8080/archiva/repository/snapshots</url>
<mirrorOf>snapshots</mirrorOf>
</mirror>
and
<profile>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<repositories>
<repository>
<id>internal</id>
<name>Archiva Managed Internal Repository</name>
<url>https://lab-insighttc:8080/archiva/repository/internal</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>snapshots</id>
<name>Archiva Managed Internal Repository</name>
<url>https://lab-insighttc:8080/archiva/repository/snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
</profile>