Wipe wallpaper with white bread? It works, says English Heritage

List of historical cleaning methods includes using milk on flagstones but advises against rubbing potatoes on paintings

Do consider using skimmed milk on a flagstone floor, or fresh white bread on wallpaper, heritage experts confidently advise. But please do not follow the advice of housekeepers who used potatoes to clean oil paintings, or Worcestershire sauce to polish the silver.

As some people prepare for a spring clean, English Heritage has revealed some of its best historical cleaning tips - and the worst.