I have also added county maps.
For street maps try either www.multimap.com or www.streetmap.co.uk - both can be searched by postcode or place. Streetmap.co.uk is better if searching for a particular street.
These maps of England are copyright and can not be used on other sites.
Large Map of England (3000 x 3165 pixels - 800k).
I will be adding more maps shortly.
Wednesday 2nd of September 2015