I carry a selection of standard cistern repair kits, flush valves and filling valves in my van. Which would normally fit most standard closed coupled toilets and fix the most common problems with them. 

Concealed / Boxed in toilets:

The parts regarding this type of toilets are a bit more peculiar and replacement parts usually have to be purchased, as suppliers do not keep a lot of them in stock. If there isn’t a purpose provided access to the cistern components – usually a tile above it, a marble top, or behind the flush plate, access would have to be made either by removing a tile or cutting out an access point – if wooden structure. 

Saniflo pumps:

I do not repair or fit waste water pumps. For this type of work you will need a drainage engineer.