G'day,
To limit your risk I would do the distance learning option. Bristol are another school that you should look at. You can fly over and do the brush ups and then the exams. Remember you need a Class one medical to get a reference number for the CAA.
Flying wise, with an ICAO IR you need to do a minimum of 15 hours to get a JAR IR.
Go to the CAA's website to get the latest info. The CAA are a law unto themselves and seem to change their minds at will..... Very expensive sometimes.
Without any multi pilot time you qualify for a JAR CPL (with ATPL exam credits = frozen ATPL).