Here are links to some sites you may find of interest:
FAB Aylesbury Facebook Page: (3) Folk Acoustic + Blues Aylesbury | Facebook
Chesham Folk Club: https://cheshamfolkclub.org.uk/
Redbourn Folk Club: http://www.redbournfolkclub.org.uk/
Watford Folk Club: https://watfordfolkclub.co.uk/
St.Neots Folk Club: http://www.stneotsfolkclub.co.uk/
Invisible Folk: www.invisiblefolk.com
Buckinghamshire Folk Musicians: https://www.facebook.com/groups/401757373220449
Hertfordshire Folk Musicians: https://www.facebook.com/groups/hertfordshirefolk
Unicorn Magazine: https://unicornfolk.uk/
Fatea Magazine: https://www.facebook.com/groups/33034857130
Jon Bickley: www.jonbickley.com