Service tax on aggregators for services in negative list

The GTA himself is not liable for the specified persons. The consignor/ consinee would be liable. 

It maybe advisable to write to revenue seeking their confirmation that such services woudl not be liable provding the  model in detail.

Thanks for your reply.  Yes, I do understand that the consignor/consignee would be liable to pay service tax under RCM.  However, my query was whether the aggregator would also be liable to pay service tax on the service (which in this case is actually in the negative list), under the notification for Aggregator services under the Finance Act 2015.

I will check with the department also on this, but any light you can throw on this would be highly appreciated.