Great news2 Oct 2017 10:28
"Annual volumes from currently identified opportunities against these agreements are expected by eServGlobal to be in the region of US$3-5 billion in the medium term."
Conservatively assuming 0.5% transaction fee on this volume, at near 100% incremental margin, equates to $20m profit at the mid point. With a 35% stake, eserv will be getting $7m pa, or circa £5.1m.
Put this on 20x, given anticipated growth, and you are already getting to £100m+ valuation for eserv's stake in Homesend, or 15p+ per share.
ESG appears well undervalued.