I'm an ex-student of the Computing Department (Graduated 2010) and my honest opinion is that it can be a bit of a mixed bag, lectures especially.
Like any subject, you can get your boring lecturers and you can get your good ones. Saying that, I found that were were quite a few good ones floating about that seemed to be genuinely excited and interested in what they were doing (Joe Finney, Francois, Alan Dix etc).
Also, the course can be taken as a minor in first year. The problem with this though is that you can get a few people that have never done any computing before and will really slow things down (i.e. heard people still struggling with "if" statements in the third term).
Saying that, if you talk lecturers and current students / grad students, then you can always delve as deep as you want into any interesting topics and even do extra stuff if you really like.
As for your original questions:
"I have an unconditional from Lancaster and pretty convinced with firming them. Just wondering if there are any current/past CS students who attended Lancaster that can give their views on the course? Such as how much help you get from staff, equipment, facilities, time schedule etc. "
You can get a lot of help from staff, but bearing in mind it's computing and programming, a lot of the stuff you learn will be through a mixture of independent study plus people showing / telling you things.
The equipment is ok overall (bog standard computers and that), but more specialised courses can get you more interesting things (i.e.playing about with PIC chips, servers etc.)
Facilities are alright (24 hour lab helps a lot), but expect the timetable to be quite heavy in terms of lectures and practicals, I was one of the busiest on my corridor anyway!
Hope this helps!