This is the relevant train, the full response is attached.
<t10:service>
<t10:rid>202111187667017</t10:rid>
<t10:uid>L67017</t10:uid>
<t10:trainid>9S37</t10:trainid>
<t10:sdd>2021-11-18</t10:sdd>
<t10:operator>Thameslink</t10:operator>
<t10:operatorCode>TL</t10:operatorCode>
<t10:sta>2021-11-18T15:14:00</t10:sta>
<t10:eta>2021-11-18T15:14:00</t10:eta>
<t10:arrivalType>Forecast</t10:arrivalType>
<t10:std>2021-11-18T15:15:00</t10:std>
<t10:etd>2021-11-18T15:15:00</t10:etd>
<t10:departureType>Forecast</t10:departureType>
<t10:departureSource>Darwin</t10:departureSource>
<t10:platform>4</t10:platform>
<t10:platformIsHidden>true</t10:platformIsHidden>
<t10:origin>
<t6:location>
<t5:locationName>Cambridge</t5:locationName>
<t5:crs>CBG</t5:crs>
<t5:tiploc>CAMBDGE</t5:tiploc>
</t6:location>
</t10:origin>
<t10:destination>
<t6:location>
<t5:locationName>Brighton</t5:locationName>
<t5:crs>BTN</t5:crs>
<t5:tiploc>BRGHTN</t5:tiploc>
</t6:location>
</t10:destination>
<t10:category>XX</t10:category>
<t10:activities>T </t10:activities>
..
<t10:service>