repairing 00 scale track

Is it possible to purchase the plastic sleepers to repaire track as I cannot seem to find any and it seems a shame to have to purchase new track when it works fine.???.

Could you be a little more specific about what the problem is with the track?? I presume you’re talking about British-style OO track. Do you have some track where the ties/sleepers are damaged and you need to replace them?? Is the track already being used on a layout ??

May be better to go to rmWeb, register (for free), and ask about 00 track repair there - the posters on that board are very helpful and friendly (much like this board !)
Anyway, I suppose you don’t know the track manufacturer (Peco is popular for 00 scale) - there are 00 scale sleepers for sale (search google, adding track to distiguish from the sleeper railway car type).

Is the track actually OO Gauge? Many OO scale layouts use HO Gauge track

Try Ebay UK. If you have an Ebay US account you can also use it there.

Bob