Worked it out, might possibly help some other folk down the line.
The %JBOSS_HOME%/server/default/deployers/ear-deployer-jboss-beans.xml file has the scope for the EAR set to isolated, this prevented the outside WAR from reaching the EAR/lib.
<bean name="EARClassLoaderDeployer">
<property name="isolated">false</property>
</bean>
Depending on the development or production environment the WAR is outside or inside the EAR, so I didn't want to just move it to the server/default/lib.
Regards
Dan