Bucks is a long thin county but if you don't mind travelling 400 miles to a session maybe South Bucks is not too far really.
Not sure about Slow and Easy but there is a morris-based (mainly English) session at The Red Lion, Coleshill, Bucks (off the A355 between Amersham and Beaconsfield) - usually on the First Sunday of the month but due to bank hols etc the next two will be the Second Sunday ie the 10th April and 8th May. 8ish start.

However it's a friendly social session (often we talk as much as play) and quiet noodling is acceptable! A bit Melodeon dominated but that's morris for you.

The pub sells good beer and the landlord just won the Home Counties "Community Pub of the Year" award. Encourages music, morris, trad pub games etc so worth supporting.

We also have an Irish session in the same pub, last Sunday of the month. Not really slow or easy but beginners welcome nonetheless. And yes, there WILL be one on EASTER SUNDAY (for people at a loose end).

Helen