Make a conscious effort to listen. The main reason we don't remember people's names or other vital facts is that we don't take them in properly or make it important to remember them.
Create a visual image - something that reminds you of the name and any connection. For example, Matt Barrett of Barclays might be a 'welcome' mat at the entrance to a Barratt home bought with a Barclays mortgage.
The more extreme the image, the greater the chance that you'll remember.