Good Luck with your investigation, Deborah. I joined the forum today and was immediately drawn to your post. Sadly, though a Yorkie myself, I am no longer living in UK.
There are, I suppose, many aspects akin to those proposed in Suggestopedia, accelerated learning etc. in my own approach to teaching English as a Foreign Language.
For me, the enrichment of an affective environment in any teaching, but particularly language, is tantamount to providing almost all students with the most meaningful and effective means by which they can internalise their learning.
I employ a great deal of visual, aural and tactile stimuli in the meterials I prepare - something students have now begun saying when they are recalling previous learning is "remember when we played that.... " and so on.
So, once again... good luck.