Hello Maycroft - welcome to Rootschat!

You don't give any idea of how old this couple may have been - 10, 40 or 80!

However, I have found :
HO107 P. 758 Fol ? Pg 1
St Mary the Virgin, Pulham, Norfolk
Charles Groom 68 Ag. Lab B. Norfolk
Mary Groom 67 B. Norfolk
and I hope they are the ones you're looking for ?
It is helpful for people searching if you can give as much information as possible - even if only something like ... "over 50 " it's better than nothing at all!