This is really a matter for the Treasurer/Finance Director/whatever their title is, but given previous discussion on the list, I thought you might find this (which I found out about today) of use: http://www.bba.org.uk/bba/jsp/polopoly.jsp?d=142&a=225
The one thing missing is the monthly charge rates (if any), but it gives a fair idea of what's on the marketplace. Charities and not-for-profit groups with turnover under £100K a year can often get free banking.
As I said before, branch location/phgone/online services of best use to the treasurer, services and price are likely to be the three key criteria - and the trustees will need to weigh up services offered versus cost. If you're likely to want (the hassle of) direct debits, and/or have lots of cash donations, the Bank of Scotland one doesn't look too bad, especially with the Halifax network for the deposit of cheques, money etc.
Hope that helps
Scott
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