For those of you who prefer accommodation in the vicinity of the SRA-E conference, the website of the local organiser lists some hotels, hostels and agencies that you might contact. 

The postal code for the Waterloo Campus is SE1, so accommodation with this postcode should be not too far from the conference venue. Other postal codes that may be of interest are WC2 (near the British Museum), WC1, SW1 and W1 (in order of distance).

Please mind that accommodation can be difficult to secure in the peak tourist season.