Bath/Shower mixer

[Martyn2]

My wife complained the mixer switching lever was getting stiff so I unscrewed it to see the problem. Something obviously broke in the process as now the mixer is stuck on shower no matter what position the switch is in. To replace the whole unit is around £100. Can spares be obtained for this item?
See attached pictures.

 

[rpm]

Send photos to theshowerdoc

 

[Ben-gee]

Is there a makers name on the hot/cold indicators? Usually is but photo is unclear.
Contact them directly.

 

[Martyn2]

Is there a makers name on the hot/cold indicators? Usually is but photo is unclear.
Contact them directly.

It says nostalgic on the tap handle inserts, whatever that may mean.

 

[WC1]

nostalgic shower mixer tap - Recherche Google

Is nostalgic not the model name?