There is little evidence of airprox issues outside CAS in conditions you would be flying an IAP in earnest
Of course; there is hardly any traffic about then.
Also there are no known IMC mid-airs in the UK since about WW2.
IAP
practice is the problem.
Irrationally I would far rather transponders became mandatory
I agree, but I don't think it is irrational because there are fairly regular mid-airs in VMC. Lookout doesn't work.
ADS-B would be even better
