Oi! You changed the question just as I was about to answer the original one about IFR UK/Europe...
You can fly the approach at LFAT without an IR, but you cannot do so in
real or simulated IMC without an IR
AFAIK.
An IMC rating doesn't cross the channel to France - it ends at the FIR boundary.
People have been asked at LFAT to produce their licence when IFR inbound -- by UK CAA officials :o
"Under the hood" / screens up is simulated IMC.