try your local county council analytical services (scientific services), we use a combination of them and our own labs, but we have a minimum order of £100.00 so so if you only have a couple check your local labs first.
Out of professional interest why do you want to ID them and do you want to genus level (not to costly but of limited use) or do you want exact speciation?
Even if you ID something fun like aspergillus to genus level it’s only a limited number of species within the genus that are actually opportunistic pathogens in susceptible individuals.
It depends what you want the information for, most labs will give you the data but without decent interpretation of the data by someone who knows what they’re doing you can easily go off an aright old tangent