For UE you need to find the IT staff member who was in drama class or local theatre or law school - anything where engaging public speaking is practised. Especially in larger companies you can find a really deep pool of talent at this sort of thing.
Then, ROI is much larger - get that employee to do lunch & learns, after hours classes, whatever. Get mgmt to buy in and offer food / incentives.
1/100th the cost of hiring an external company, the material is INCREDIBLY well tailored to your environment and the "teacher" is always around.