Billingham bags are designed to grow old gracefully! Professional photographers usually prefer a well worn, battle scarred Billingham to a new clean version, however, you may wish to reduce the grime level on your Billingham so here are a few tips:
Remove all the loose Superflex and base foam.
DON'T put your Billingham into a washing machine; the detergent will almost certainly ruin the leather.
Place the bag on a draining board and wash the bag with warm soapy water, using a nail brush on stubborn areas of dirt.
Wash all soap away with clear water and allow to dry naturally (airing cupboard) or at least without too much heat. Excessive heat might affect the Stormblock waterproofing.
When the bag is dry carefully apply leather dressing to the binding and leather areas. We recommend Mars oil or Nikwax. Try not to mark the canvas when you are applying the dressing.
The canvas is tough, the dyestuff resistant and Billingham Stormblock waterproofing pretty incredible, but hard scrubbing might lighten the colour and excessive heat or exposure to acids (such as battery acid) might spoil the Stormblock so please go carefully!