It's easy to get time off when you are sick, people in the company are very kind and flexible about it.
No major problems although contract changes imposed recently limit sickness pay. Personally I do not find this a problem although some colleagues were unhappy with the way this was done.
They pay you when you are ill. I have never not been paid.
Depending on your manager, you might get paid, you might not
Extended sick pay up to 6 months
Best thing: you get it. Worst thing: 5 instances in a rolling year and it's a meeting.
Sick days are treated as regular work days in terms of pay. There is a limit on the number of groups of days off you can take for sickness each year.
I haven't been away long enough in my time yet to see the benefits. You are paid the same amount if you are sick regardless. There may be a limit, after which you would need a note from a doctor. You get 27 paid holidays year across the business.