http://www.brantsteele.com
Basically there's been this simulator site for a while now that allows you simulate BBUS and Survivor seasons with your customised cast, and there's endless possibility of what can happen. And now the BBUK cast has been added in it's entirety!
The BB1 template is the only BBUK-template version at the moment (as BB1 USA was the only US season to use that format). You can increase the number of housemates by clicking
Add More Houseguests and to choose your own housemates you have to go on
Custom Mode and change the cast to BBUK and then pick your housemates!
You can also play the game yourself in
Interactive Mode 
HOW TO GET TO BBUK:
- First, click 'Adjust Size if you want more than 10 housemates, and select the number you want
- Hover over the 'Simulate' button and press 'Custom' in the drop down menu
- Go to the bottom of the page and click 'Big Brother UK' in the "Change All Shows" section, then click the 'Change All Shows' button
- Then choose the housemates you want to be in your simulation cast!
- Then click 'Proceed to House Events' etc.
HOW TO PLAY ALONG YOURSELF AS A HOUSEMATE:
Same steps as above, then;
- Hover over the 'Simulate' button and press 'Interactive' in the drop down menu
- Choose one of the housemates you want to play as by clicking on their highlighted name (the page will refresh after you've selected, then you need to go to the bottom of the page and click "Go to Week 1"
- Click 'Proceed to House Events' etc.