I use bing and google earth for aerial views, its 50/50 which gives the better view of any particular area.
The downloaded version of google earth has more facilities than the online browser based one.
For actual detail street map of Wirral, the online Cheshire Tithe is brilliant, when you zoom in all the way it changes to a different map which has a lot of detail - only a small window though unfortunately.
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell
When the debate is lost, slander becomes the tool of the loser. Socrates