After having no luck with German supplier, time to look at other solutions. I modified my Mini filter to help with fluid circulation and seems to work. As metioned the BMW pan is samefitting as far as I can tell (gaskets are the same) so I am trying to locate a filter pan to try it out, fingers crossed.
No longer available. Also, the one at B&G is for MINI not TF. It has different oil pick up and slightly different shape.
Bit naughty really as showing same part number. i had problems when I fitted that one and after a lot of searching decided to "modify" the strainer to look more like original, so far so good. I have ordered one from German web site, not holding my breath though.