Yes. Entirely acceptable - see LASORS section F1.4: "This instructional flight may be replaced by any other flight that has been undertaken with a JAR-FCL or UK Military instructor" (e.g your LPC/OPC(IR)). Moreover whichever Examiner conducted your LPC/OPC(IR) should have known that and should also have signed your licence to revalidate your SEP Class Rating.
Any doubts, PM me and I'll be happy to sort things out.