Hi Krinjal,
You can very well implement Wildcards in Topic to Queue mapping. So for your example, if you need filtering based country, you can add the following subscription to your Queue:
Q1 (Gets all messages irrespective of the country code): JNDI/solacemule/>
Q2 (Get all messages for UK): JNDI/solacemule/UK
Both topic Wildcards (> and *) can be used on Topic to Queue Mapping.
You can also use topic exclusion (“!”) to exclude a particular topic from the list. (Configuring Queues)
I hope this clarifies your query.