There is no solution.
Well, two possible solutions come to mind, from the point of view of the poor punter, and it's his/her life at stake (if taught badly) after all.
(1) Hire a personal private instructor and pay them £40k pa.
(2) Get taught by someone for whom instructing is a fun hobby, ie is not their day job on which they're trying to bring up a family and support a non-working partner.