如题，已开始工作，但还没有签合同，如果去报告是否需要有合同？多谢！
不需要，只有换地址和换签证需要去
需要，你仔细看你警察局报到的时候给你的那个卡片大小的纸片。
你更改雇佣信息，地址以及签证状态都必须去警察局盖章。
对于LZ的情况，带着合同一起去。
原文自己看：
Change Notifications
Any change of residential address must be reported to the nearest police station or this office not later than 7 days of the change
Any change of work address or occupation must be reported to any police station or this office within 8 days of the change
Any change of school, college or university should also be reported to any police station or this office within 8 days of the change
Any other changes, including change of name, nationality, passport/travel document or marital status must be reported to this office within 8 days of the change.
You must bring the appropriate documentation for examination, for example original marriage certificate and/or Home Office letters (If you are reporting marriage to a British Citizen you must bring your spouse’s British passport or original birth certificate).
Ref: http://content.met.police.uk/Article/Registration-with-the-police/1400011320193/1400011320193
以上网址虽然是London Met Police但是对于UK全国都适用。
楼上的建议是比较保险的，小心一点总是好的，可以避免未来不必要的担心和麻烦。
UKBA的官网上的官方说明：
The police station will record:
your full name;
your sex;
your marital status;
your date and country of birth;
your nationality;
your address in the UK;
the address of the last place you lived outside the UK;
your date, place and method of arrival in the UK;
your passport details;
your place of study, if you are a student;
your employment details, if you will be working; and
how long your visa allows you to stay in the UK, and any conditions it makes on your stay.
If any of this information changes, you must report it to the same police station, but you do not have to do this in person.
多谢回复。请问去报告的话一定要带合同吗？合同还没有准备好，估计等拿到合同时就已经超过8天了。
你可以先给你们当地的OVRO写邮件或者打电话预约，一般警察局做这个事情都是需要预约的，预约的时候提供你的PRC Ref Number（就是注册信的号码）。
你可以在联络他们预约的时候问问怎么办，一般来说是需要一个文件来证明你确实被雇佣了。我当时完成预约＋报道也早过了8天了，关键在于你要告诉他们你知道你需要完成这个步骤。
没报备会怎样。。
[quote=“endrt, post: 7, topic: 1244498”]
没报备会怎样。。[/quote]
跟所有钻空子的结果一样，没事就没事，查到的话就有大事。这个最高是有6个月监禁的。
原文：
FAILURE TO COMPLY WITH THESE REGULATIONS MAY RESULT IN YOUR ARREST AND RENDER YOU LIABLE TO A FINE OF £5000 and/or UP TO SIX MONTHS IMPRISONMENT.
出处：http://www.northumbria.police.uk/advice_and_information/students/internationalstudents/visa/
循规蹈矩没什么坏处也不会给任何人找不必要 麻烦。
当然如果非要钻空子成功的例子，我身边也有来这边留学，一次章都没有盖过的，最后还是很顺利回国了的人。这种人我想大家身边都有。是不是要铤而走险，我觉得大家都有辨别的能力吧？
谢谢。。