Data sourcing and updating of database

We need an analytical person who is happy to update a database of contacts. We have a large database which is in need of tender loving care. Ideally the candidate can fast type. Project should be around 15>20 working days.
Candidate must be happy to call contacts too if needed to confirm details. Good spoken english is a must.

The job would be working in London N1, just off City Road. The position is for someone all time for around three to four weeks depending on how experienced they are.