All TiVo & V6 boxes have access to the same CatchUp & Boxset programmes that ITV helpfully splash "ITV Hub" branding all over. If you're asking about the "ITV Hub" streaming app, then yes you need a V6 to use this.
Firstly, it's a requirement of the V6 that you also have VM broadband, it won't work otherwise.
If you've had your current TV package more than a year, your best bet will be to follow the "re-grade" route. Take a look at your TV bundle and call VM with a view to moving to the closest available current package in exchange for a new 18month contract and a box-swapout.
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