http://www.thegenealogist.co.uk/index.phpDirectories from 1905 back to 1852
Census transcripts from 1901 back to 1841
Early birth certificates from registries and non-conformists (pre 1837)
Birth, Marriage and Death records index from 2005 back to 1837 (when they began) for the whole of England and Wales
Parish records from 1837 back to 1538 (when they began)
Non-conformist records back to the 1600's
Electoral Roll for London 2005
Historic books back to 1127
military WW1 WW2 Rolls of honour
Directories
Landowner records
Knights of England - trace your ancestors back to the twelfth century!
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alternatively, pay-as-you-go from just £5.
A premium subscription gives access to over £10,000-worth of data (based on the equivalent pay-as-you-go-price). They also have a 'circa 1911' section....no idea what's there yet.
The site says 'census transcripts' but they do also have the images, they are good quality and viewed as pdf's.
I didn't like the search to begin with but I have got used to it.