Pfthb

There are lots of answers with no namespaces involved but I'm having trouble with the namespace.

Here's the xml doc:

<GetServiceRequestDetailsResponse xmlns="http://lcc.catscrm">
<GetServiceRequestDetailsResult xmlns:a="http://schemas.datacontract.org/2004/07/LCC.CATS.CRM.WCF.Model" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
 <a:AltRefs>
 <a:AltRefModel>
 <a:Name>UTRN</a:Name>
 <a:TypeId>7577</a:TypeId>
 <a:Value>9024930</a:Value>
 </a:AltRefModel>
 </a:AltRefs>
 <a:Customer>
 <a:Address>
 <a:Address1>5</a:Address1>
 <a:Address2>Random</a:Address2>
 <a:County>West Yorks</a:County>
 <a:NumberName>5</a:NumberName>
 <a:Postcode>L1</a:Postcode>
 <a:TownCity>London</a:TownCity>
 <a:UPRN i:nil="true"/>
 </a:Address>
 <a:AltRefs/>
 <a:ContactTransports>
 <a:ContactTransport>
 <a:Name>MobileNumber</a:Name>
 <a:TypeId>3</a:TypeId>
 <a:Value>08965</a:Value>
 </a:ContactTransport>
 <a:ContactTransport>
 <a:Name>Email</a:Name>
 <a:TypeId>1</a:TypeId>
 <a:Value>a@b.com</a:Value>
 </a:ContactTransport>
 </a:ContactTransports>
 <a:CustomerUPRN i:nil="true"/>
 <a:FirstName>Rob</a:FirstName>
 <a:Id i:nil="true"/>
 <a:LastName>Bowman</a:LastName>
 </a:Customer>
</GetServiceRequestDetailsResult>

I need to get the /ContractTransport/Value where the /ContractTransport/Name='Email'.

The following xpath gets me to ContactTransport /*[local-name()='GetServiceRequestDetailsResponse']/*[local-name()='GetServiceRequestDetailsResult']/*[local-name()='Customer']/*[local-name()='ContactTransports']/*[local-name()='ContactTransport']

If there were no namespaces then I guess I could suffix with [Name='Email]/*[local-name()='Value'] but this doesn't work now.

You can add

/*[local-name()="Value" and preceding-sibling::*[local-name()="Name" and .="Email"]]

to your existed XPath to get required output

This might not be the most elegant option, but here's one:

//*[local-name()='ContactTransport']/*[local-name()='Value' and ../*[local-name()='Name' and text()='Email']]

This will select all Value elements underneath a ContactTransport that have a sibling whose Name text is Email. Demo.