my car has just decided to lose reverse (yup i have to use it to get off my drive

)
neways ive tryed to adjust the linkage cos it wernt perfect after i changed the box neways but i just cant get it to select, any ideas??
im thinkin maybe the safety thingie to stop ya gettin reverse while ur movin is bustd btu maybe its been seen b4 and theres a simple remedy (i hope

)
Ta