www.e-motion.uk.com
These are the 5 top most SEM Companies in Birmingham.
1). http://www.gsinc.co.uk/
2). http://www.denningesolutions.com/
3). http://www.powerscribe.com/
4). http://www.ricemedia.co.uk/
5). http://www.tamba.co.uk/
For further details choose one among the best and do contact them.
Good Luck! 