Leased lines and timescales

[batmanreturns]

Hi all

We are about to exchange on the purchase of some new offices. However, i'm trying to get a handle on real life timescales from people who have had to have a brand new leased line installed. Openreach quote the standard 3 months, is it quicker or slower than this? Are there anyways of speeding up the process?
thanks

[batmanreturns]

Is it only Openreach that can supply them and do the install or other firms like Virgin?

[batmanreturns]

In answer to the question it's becuase we are based on voipfones, have around 30 people in the office and are due to grow to approx 50 people next year hence needing a leased line.
thanks for everyone thats replied. Looks like i'm in the hands of good old Openreach and their 3 month window!