Hi OPEN DES,
You are correct.
I don't have a copy of EASA rules and regs but
From EU OPS:
Page 104
"OPS 1.510
Landing — Destination and alternate aerodromes....
(c) For instrument approaches with decision heights below 200 ft, an operator must verify that the expected landing mass of the aeroplane allows a missed approach gradient of climb, with the critical engine failed and with the speed and configuration used for go-around
of at least 2.5 %, or the published gradient, whichever is the greater (see CS AWO 243).
The use of an alternative method must be approved by the Authority."
(I've never found the UK CAA regulation which specifies 3% go around from CAT II approaches.)