<<SRA’s? there is a blast from the past.......sadly fewer and fewer civil ATC units are able to offer an SRA or PAR today HD.
I understand that the cost in training and currency is considered prohibitive,>>
Not wholly so in the UK. Although PAR is long gone at the majority of civil airfields, I suspect that every airfield with surveillance radar can offer SRAs; certainly all the major ones can. SRAs are part of normal training for radar controllers at airfields and there is a requirement for them to maintain proficiency with regular practice. Fear not, if the ILS fails some kind gent/gentess will gabble you down the approach!