No mention here of the excellent CPL(H) ground school run by Ground Training Services Ltd of Bournemouth [I have no connection to them in anyway, nor any axe to grind].
GTS got me through the whole thing via home study in six months flat, while holding down a full-time job running my own business. And for less than two thousand quid!
And why, if you're just going to instruct and do a bit of VFR charter work, would you bother with the ATPL(H)? Get in quick under the interim arrangements and you won't even have to do a CPL performance paper.
If I decide my brain is big enough and my pockets deep enough and the salary prospects tempting enough to do an IR, I'm told the two ground school modules are no sweat if you've coped with the CPL(H).
CPL(H) for me, any day.