Acording to the ANO Schedule 8
FCL.740.A (b)(1) and (4) of Part-FCL, provided a SEP aeroplane with three axis control system is used.
FCL740.A no longer exists in UK legislation however (b) (1)and (4) do:
(b) Revalidation of single-pilot single-engine class ratings. (1) Single-engine piston aeroplane class ratings and TMG class ratings. For the revalidation of single-pilot single-engine piston aeroplane class ratings or TMG class ratings, the applicants shall: (i) within the 3 months preceding the expiry date of the rating, pass a proficiency check in the relevant class in accordance with Appendix 9 to this Part with an examiner; or (ii) within the 12 months preceding the expiry date of the rating, complete 12 hours of flight time in the relevant class, including:
— 6 hours as PIC,
— 12 take-offs and 12 landings, and
— refresher training of at least 1 hour of total flight time with a flight instructor (FI) or a class rating instructor (CRI). Applicants shall be exempted from this refresher training if they have passed a class or type rating proficiency check, skill test or assessment of competence in any other class or type of aeroplane.
(4) When applicants hold both a single-engine piston aeroplane-land class rating and a single-engine piston aeroplane-sea class rating, they may complete the requirements of (1)(ii) in either class or a combination thereof, and achieve the fulfilment of these requirements for both ratings. At least 1 hour of required PIC time and 6 of the required 12 take-offs and landings shall be completed in each class.
It makes no stipulation with regard to whether the aeroplane is pink; white or blue or even French! So 6 hours can be dual in any SEP. However; to be valid for licensing purposes any dual instruction must be endorsed by the Instructor who gave the training AMC FCL.050.