tomato fruit problem

[ken c]

my greenhouse tomato fruit is red and ripe looking on the outside but green on the iside,
both types "Gardeners delight" & "Money maker"
any ideas??

[Robinia]

It could be the low temperatures we've had this summer (assuming you're in the UK!) Any sun we have had has ripened the outside before the insides. Leave them a while longer & see if they ripen or try picking a few green ones, put them in a warm dark place & see how they go.
Don't forget about them!