Westerman, I don't think your travel agent knows what they are talking about! They should be able to issue you with a thru ticket regardless of what the customs procedure is. Even if you have to clear customs at the first point, the USA being the prime example of this procedure, you can still have a thru ticket!
Even so on an international to uk domestic journey the bags CAN be labelled thru to the final point on a thru tkt that your agent can issue. You clear your actual bag thru customs at the final point yours being GLA. When you transfer at MAN your connecting airline will direct you to a customs point within the transfer area but you dont pick up your bag as it will be making its own way to your connecting flight to GLA. Basically when connecting onto a flight within the EU your bag clears customs at the final point. If you are arriving from within the EU then your bagtag will have 2 paralel green stripes running down the outside edge. Where as if you come from outside the EU you bagtag will be plain white. This is how customs in GLA will differentiate who has come in from where in the world and priorotise it from there.
Feel free to PM me!
Agent x
