Did a search for your dates in our hotel search and came up with Best Western Corona for 79.95 - 109.95 on your dates. The description says that it is walking distance from Victoria Station:

<a href="http://www.nonrev.net/hotel.htm" target="_blank">http://www.nonrev.net/hotel.htm</A>

This looks like a pretty good event guide:

<a href="http://www.timeout.com/london/intagenda.html" target="_blank">http://www.timeout.com/london/intagenda.html</A>