Dr Ros Altmann
This is no longer the case. All MPs have to listen to, and represent, the needs of their constituents. To do this they must have a line of communication direct with them and therefore publish their contact details, including their constituency email address for public use. For those of you who would rather see them face to face, then make contact with their office and they will happily give you the details of when their regular 'surgeries' take place.
It's worth bearing in mind, however, that MPs will often only act on behalf of their own constituents, so it's really important to make sure you are communicating with the right person. The Government website is very quick and easy to use. Simply visit their website using the link below, enter your postcode and it will provide details of your local MP and how to make contact with them.