The car park itself is no more than a ten minute walk to anywhere within Derby city which isn't bad considering the price.
In regards to security, there are actually no gates or barriers however the enclosure around the Darwin place ring road make it seem considerably safer.
The car park is large, always with plentiful spaces and well maintained. Especially good value for night time use as is free after 8pm. I always make use of the car park for closes at work, as for a 9 hour stay, I only have to pay for 3 hours.