Just a warning I have had this email two times this week.
When I followed the link it asked for all bank details & other information.
Nasty people
Dear Customer,
Technical services of the BT.com are carrying out a planned software upgrade.
We earnestly ask you to visit the following link to start the procedure of confirmation on customers data.
To get started, please click below:
Upgrade
This instruction has been sent to all our customers and is obligatory to follow.
Thank you,
Customers Support Service.