I think it's quite right for you to be outraged, Kath, but surprised?  Well, perhaps not.  
 
A cynic might even suggest that it's a good deal more surprising that they didn't just throw the lot away.  Clearly as archive professionals we're all likely to be at the polar opposite end of the spectrum of regard for historic documents, but there are many people out there - some of whom, I'm sure, work for banks - who would regard deeds as worthless old bits of paper or parchment. 
 
Obviously one would hope that as many depositors as possible will pitch up at that particular branch and demand their documents and their £100 (which sounds quite generous).  Such a flood (no pun intended) might help them realize that many people value such items and that they should perhaps have held them in higher regard in the first place.
 

Brian Carpenter
Community and Education Development Officer
Devon County Council
Devon Record Office
Great Moor House
Bittern Road
Sowton
Exeter
Devon
EX2 7NL
United Kingdom
Tel:  +44 (0)1392 380573
Fax: +44 (0)1392 384256
Web Page: http://www.devon.gov.uk/record_office.htm
Disclaimer:  http://www.devon.gov.uk/email.shtml

Contact the list owner for assistance at [log in to unmask]

For information about joining, leaving and suspending mail (eg during a holiday) see the list website at https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=archives-nra