The recreated Victorian Post Office at Blists Hill
This year’s Autumn Stampex starts next Wednesday and if you’re going make sure you look out for the BPMA. There will be displays on our re-created Victorian Post Office at Blists Hill, Ironbridge, as well as London 2010: Festival of Stamps. You will also be able to find a stall run by the Friends of the BPMA amongst the dealers. The Friends will be selling some of the products available in our Shop and can give you general information about BPMA activities and events. See you there!
The British Postal Museum & Archive blog 
On each of the 3 websites I have consulted there is no mention of opening and closing times
From http://www.stampex.ltd.uk/autumn-2009.html:
“Opening times are from 11.30am to 7pm on the Wednesday, starting at 10am on the other days and closing at 6pm on the Thursday and Friday and 5pm on the Saturday.”
He’s right. Thanks for listing the information here!