@Edington, that isn't strictly true. The requirement for the IR test to be flown in EASA airspace only applies to ATOs that are approved to operate outside EASA airspace. The UK rules mirror the EASA rules. Thus a UK-based ATO with both UK and EASA approvals must test for the EASA IR in EASA airspace but the UK test can be flown in any airspace. It can, in theory, be one single test conducted in EASA airspace (provided the examiner holds both authorisations). Good point, though, different ATOs cope with this in different ways and setting up a single test for both licences can be challenging. It is often easier (but more expensive) to fly two tests.