In the above document, the scheme for large airlines has the 100 hr limit on flight hours for flight crew, but exempts cabin crew from the limit, if I read it correctly -
The limitations which shall be applied to cabin crew are those applicable to flight crew members contained in paragraphs 6 to 23, but with the following differences:
a) A flying duty period can be 1 hour longer than that permitted for flight crew. The FDP and limits set on early starts for cabin crew shall be based on the time at which the flight crew report for their flying duty period, but that FDP will start at the report time of the cabin crew.
b) For cabin crew the minimum rest period which will be provided before undertaking a flying duty period shall be:
i) at least as long as the preceding duty period less 1 hour; or
ii) 11 hours; whichever is the greater.
c) The combined sum of standby time and subsequent FDP can be 1 hour longer than that permitted to flight crew.
d) The maximum duty hours for cabin crew shall not exceed:
60 hours in any 7 consecutive days, but may be increased to 65 hours when a rostered duty covering a series of duty periods, once commenced, is subject to unforeseen delays.
105 hours in any 14 consecutive days.
210 hours in any 28 consecutive days.
e) The annual and 28 day limits on flying hours appertaining to flight crew need not be applied.
f) The limits relating to two pilot flight crew long range operations do not apply.
The CAA gives interesting reading on enforcement -
Working Time Regulation | Operations & Airworthiness | Safety Regulation