Wednesday 29th, 19:30 ish, although most seem to arrive @ around 8pm.

Here's a post about it in Shows and Meets: https://passionford.com/forum/viewtopic.php?t=124882

PS: There is another pub called the Bull not too far away in Barkham - It is not the right one

If I find the directions I made up a while ago, I'll pm them to you

Alternatively, you could arrange to meet boXXer (mike) somewhere and he can lead you there.