Here you, tidied up a bit from Morris Ring versions found through the ABC tunefinder...

X:1
T:Constant Billy, Headington 2
M:6/8
L:1/8
Q:3/8=120
S:RKS
A:Headington
P:A(AB)4
K:G
P:A
D|G>Bd B>GB|c>Bc A>FD|B>AG E>DC|D>EF G2:|
P:B
D|B>cd e>cB|A>Bc d>BG|B>cd e>cB|A>Bc d2
D|G>Bd B>GB|c>Bc A>FD|B>AG E>DC|D>EF G2:|

X:2
T:Constant Billy, Adderbury
M:6/8
L:1/8
Q:3/8=120
S:CJS
A:Adderbury
P:A(AB)6
K:G %Transposed from A
P:A
  D     |G2d B<GB|c2A F2D|B>AG E2D|DEF G2:|
P:B
  z     |Bcd e3  |ABc d3 |Bcd  e3 |ABc d2
(3d/e/f/|g2d B>GB|c2A F2D|B>AG E2D|DEF G2||