I am looking for reliable information on wartime £GB/$US exchange rates. Can anyone point me to a good source please?
I would suggest you send off an email to a number of the larger Merchant bank companies in the UK (from the daily paper) and pose the question. One of them may have the historical data available. ALSO: Bank of England. Barklays Lloyd's Midland Nat West British Banker's Association Good Luck.
Angie, It might also be worth E-Mailing the Bank of England. They gave me very useful information on the value of the pound in relation to today purchasing power for each year going back to 1887. I know it's not quite what you want but I'll be surprised if they cannot provide Second World War exchange rates against the US$. The address to E-Mail is: enquiries@bankofengland.co.uk. David T.
http://www.statistics.gov.uk/ The uk stats office have also proven very valuable in the past as well as the monetary policy office in the Bank of England