Second Papa Charlie...Real Flying Co are a quality outfit
AB : Can't quite remember off the top of my head what the rate is but I've a feeling the dual rate is over £200-240 range. In any case they want you to have a sign off in the Chippy or quite a bit of taildragging before starting dual on the Stampe... which is understandable the dam* thing is absolutely immaculate. Mind you the Chippy is in pretty good nick too.
Of course doing the conversion on a Tiger, Stampe or a Chippy you'll also get familiar with the joys of post flighting anything powered by a Gypsy engine - LOTS of oil to wipe off!