Don,
"Operators" (AOC/Part M or Part 145) can't give you a Part 147 course.
I suggest you try asking Part 147 organisations if they do this course. A List of Part 147 organisations should be free on National Authority websites CAA.co.uk, ENAC, LBA, DGCA, etc...or:
AgustaWestland Yeovil Training Academy
24 Lysander Road, Yeovil, Somerset, BA20 2YB, United Kingdom
+44 (0) 1935 475222
Part 145 organisations can only give OJT for a 1st Type Rating which you don't need because you already have AW109.
Hope this helps