Location. The Proof house is at 48-50 Commercial Road, London E1 1LP:
Limited local parking is sometimes available, though there is no assurance of getting a place on the street and the metres are expensive.
Public Transport. Should you wish to travel by public transport, the nearest tube station is Aldgate East and there are a variety of buses. The London Transport route finder should be able to recommend a suitable route. Simply enter where you are coming from into the box at right, remembering to tell the box if this is a station, post code, address or what, and hit the "leave now" button. It already knows where we are.