Did it years ago when my then employer was working direct for Corus as was then, & it was needed to work anywhere on site to do anything basically.
Will probably re-do mine shortly depending on which way work goes.
Mine expired in March would have renwed it if i had the money, used to be called a Scats card as i was told and you need it to get onto certain industrial sites. I had to get mine in 2010 when the firm i was working for had a contract relamping the road lighting at stanlow and tranmere oil renfinery.