Tecpilot,
I'm not sure where your information is coming from but the fuel carriage was alleviated in EASA regulations to provide a more practical implementation.
SPA.HEMS.150 Fuel supply
(a) When the HEMS mission is conducted under VFR within a local and defined geographical area, standard fuel planning can be employed provided the operator establishes final reserve fuel to ensure that, on completion of the mission the fuel remaining is not less than an amount of fuel sufficient for:
(1) 30 minutes of flying time at normal cruising conditions; or
(2) when operating within an area providing continuous and suitable precautionary landing sites, 20 minutes of flying time at normal cruising speed.
Jim