EnglishAl: "a quote from the SRG website"
Name that quote! if you are refering to the FAQ on the CAA website:
CAA FAQ on ICAO privileges
That ORIGINALLY said that a ICAO PPL and I/R gave the SAME privileges as an IMC, and as you'll see this was subsequently amended and that bit withdrawn when it was pointed out that they didn't (the difference being the IMC is valid in Class D and E for approaches in IMC, and the foreign combination isn't). If you have spotted it somewhere else on the CAA website other than this link above, they will no doubt correct that too!