The most reliable way to contact me is by email.
I give a bunch of alternative ways here as well, if you want to try them, but I offer no guarantees as to when (or if) I might get your message.
Tel: +44 (0) 1473 435041
Efficacy Solutions Limited
Basepoint Business Centre, The Havens,
Ipswich, Suffolk IP3 9BF
Tel: +44 (0) 7803 135041