Mark 1, that's completely incorrect
Maybe you need to check Sch.7 of the ANO
SSEA class rating
(1) Subject to paragraph (2) and to the conditions of the licence in which it is included, a
SSEA class rating entitles the holder to act as pilot in command of any SSEA with a
maximum take off weight authorised of not more than 2000kg excluding any such
aeroplane which is a SLMG or a microlight aeroplane.
(2) (a) If the current certificate of revalidation for the rating is endorsed "single seat only"
the holder is only entitled to act as pilot in command of a single seat SSEA.
(b) (i) If the aeroplane:
(aa) is fitted with a tricycle undercarriage;;
(bb) is fitted with a tailwheel;
(cc) is fitted with a supercharger or turbo-charger;
(dd) is fitted with a variable pitch propeller;
(ee) is fitted with retractable landing gear;
(ff) is fitted with a cabin pressurisation system; or
(gg) has a maximum continuous cruising speed in excess of 140 knots
indicated airspeed,
before exercising the privileges of the rating, the holder must complete
appropriate differences training.
(ii) The differences training must be given by a flight instructor entitled to
instruct on the aeroplane on which the training is being given, recorded in
the holder's personal flying logbook and endorsed and signed by the
instructor conducting the training.