MPH will may be inserted by the LBA on request due to the EC 135 rating
I doubt it.
MPH hours requires a MPH-Type rating.
As you are holding a license with r.p. ratings, you do not "have" valid ratings until you pass a (civil) checkride on a civil helicopter.
For getting a MPH rating onto your license, you will have to pass a MPH-type rating course, which (afair) consists out of 5 or 10 hours in the aircraft (as this will be your FIRST MPH rating on your license).
In BesAnLwA-AbtFlBtrb 505/5101 you can see that-even if the EC135 hours are considered as "MPH" in regards to your license conversion (military to civil), it will only be transfered into your civil license as SPH.
(Chapter 7, Appendix 3).
BO105 and EC135 can only be transfered onto a civil license as SPH.
Regarding your EC155 rating:
Go and talk to a TRTO.
You will have to do a MEH to MEH conversion (4 hours).
Probably going to cost you about 15.000-20.000 Euro.