That is not what the ANO says.
The privileges of the IMC Rating may be
exercised in UK territorial airspace. The IMC Rating may
not be used in the airspace of any other Country unless
permission to do so has been given by the appropriate
authority of that Country.
I think you may have also misunderstood para 1 of sch 7 which deals with the entitlement within the UK but because it deals with the UK you cant read that to mean it excludes elsewhere.
The letters I have seen from DGAC are quite clear and are in English - there is no room for misunderstanding. They are between DGAC and the individuals concerned so I am not about to "publish" them on an open forum as that would be entirely inappropriate. Given the changes under EASA I suspect they will not have long term validity in any event but there are further changes a foot.