But, what are your experiences? Has it been hard for you to get a week or two off at a time?
I've never had any trouble getting as much time off as I would like and all my employers have been very flexible and accommodating with leave. From day one of every UK job I have had, I've been entitled to 5 weeks of paid leave per year and with the exception of having a leave ban at Christmas (both of my most recent jobs involved working over the holidays), I've always been able to take leave when I wanted it, and as much as I wanted.
One things I love about the UK (I'm British born and raised but have lived in the US) is how much paid time off we get each year compared to the US, and how we're encouraged to use it all.
I have had UK employers in the past basically telling me I HAVE to take a week off, even when I wasn't going to (I had just started back at my old vacation job one year and after a week my manager said: "Would you like to take a week off next week? You have leave to use up and if you don't use it now, you'll lose it").
That job was a bit annoying though as I wasn't allowed to just book 1 day at a time, I had to book a full week off (not helpful if I just wanted one day off for an event or an appointment) - plus I had to choose all 5 weeks leave for that year in February (leave year was April to April), even if I hadn't decided when I wanted to take them... so I had to just pick random dates that I may or may not want to take as leave and then try to adjust them later. We had to give 1st and 2nd choices for our 5 weeks off and then hope we got the ones we wanted.
At my current job, as long as I book it far enough in advance that no one else wants the same weeks off (we can request leave up to 12 months in advance), it's not been a problem. In some cases, if it's important to have leave on a certain date that someone else has booked too, you can negotiate with them to work it out.
Right now, I get 25 days of leave, plus 8 bank holidays, plus 2.5 privilege days, and due to working shifts and often having to work the bank holidays and Christmas, I can take the extra 10.5 days whenever I like during the year. My leave year runs April to April and I can carry over up to 10 days into the next year (also, if I run out of leave, I can request to bring some days forward from the next year, although we're not really supposed to do that).
In the last couple of years I have taken the following leave:
Early May 2012: 1 week just because I felt like it
Late May 2012: 1 week for my birthday
November 2012: 2 weeks for a trip to the US
(No leave in the summer because I was working a 3-month research placement)
March 2013: 3 weeks for a trip to China
Early May 2013: 1 week for a trip to Italy
Late May 2013: 1 week for a trip to Paris
November 2013: 3 weeks leave between overseas deployments
March 2014: 3 weeks leave after second overseas deployment
May 2014: 2 weeks for another trip to Italy
September 2014: 2 weeks for a trip to the US