The CAA can not issue a new AFI rating to teach PPL SEP since JAR-FCL came into force.
Quite right; but they have re-issued AFI ratings for that precise purpose, provided the holder has completed a declaration of JAA knowledge!
There is no such thing really as an FI(R) rating.
In JAA terms correct; but the CAA do issue such a rating because it replaced the AFI rating. The Spanish DGAC simply issue a FI rating and the restriction is administered by the holder; two quite different interpretations.
the restrictions applied to an AFI are less onerous in terms of what they can teach dual compared to a restricted FI.
A FI(R) can teach on an Integrated course whereas a AFI cannot; An AFI can teach IMC and Multi if qualified but so can a FI(R) if they hold stand alone CRI and IRI ratings. So really there is little difference.
In such a case, would you expect the supervising FI to be present at the unlicensed aerodrome to supervise the briefing, then drive, catch a ferry and drive again to the licensed aerodrome where the training flight was to start and end after which they drive - ferry - drive back to the base aerodrome to supervise the de-briefing.
Maybe a FI(R) should not be operating in such an environment. I recall one CFI who was interviewed by the CAA because circuits were conducted at another aerodrome unsupervised.
The CAA are still issuing JAA Flight Instructor ratings with "Restrictions" that ceased to exist with the old Flying Instructor Rating because they hadn't got the software to cope with the change. 11 years later they still haven't done anything about it! Whilst the UK embraced JAR-FCL with enthusiasm, it did not follow all the requirements.