Word of warning for anyone considering using VM for ANYTHING. You will pay your bills on time for about 7 years, never miss a payment - then when they leave, they will RUIN your credit score by marking late payments and defaults on your account with no prior warning at all. Because apparently you didn't pay a £10.32 last bill, which was paid, and they even tell you its paid and will send you an email confirming you paid them. They'll still leave the stains on your credit file though, because it doesn't have any impact to them, and from what I can see are too incompetent to actually run a business correctly.
They will then inform you on the phone they can't do anything about it, because you know they're incompetent and all they seem to want to do is cause you pain for leaving.
You'll then have to email an email address, that says they'll resolve it in 21 days, and they won't. Its cost me a job worth £160k per annum as I failed the background checks.
I've instructed a solicitor to take VM to court for defamation of character and loss of earnings. We think 5 years @ 160k is reasonable.
So theres the warning, unless you have about £50k to throw at a solicitor to literally sue them, you'll be screwed. Good luck if you're in contract and want to leave, you were warned.