FWIW, Bladecrack, it's a minimum of 35hrs on one type - 25hrs dual and 10hrs solo.
C2.2
An applicant for a JAR-FCL PPL(H) shall have completed
on one type of helicopter, having a certificate of airworthiness
issued or accepted by a JAA Member State, the
particular requirements specified in (a) and (b) below.
Training for an additional helicopter type rating may be
included within the PPL (H) training providing that the
particular specified requirements in (a) and (b) and the
PPL (H) Skill Test have completed on one helicopter type.
Applicants must also complete a LST on the additional
helicopter type to also be endorsed and theoretical
knowledge examination.
(a) 25 hours* Dual Instruction on Helicopters, must
include (i);
i. 5 hours Instrument dual instruction time
(b) 10 hours Supervised solo flight time on Helicopters,
must include (i);
i. 5 hours Solo cross-country flight time, must
include (ii);
ii. One cross-country flight** of at least 185km
(100nm)