Unfortunately its early days and I know personally these works can have a way of lasting longer than anticipated.
All I will say is be prepared in case they are unable to do the install as expected on 22nd...
I was delayed 3 weeks in getting my service active a new address in November because of same reason (cable in street but not to my house) nearly got delayed further as there was a blockage but some carefully use of some sticks extracted the blockage.
In my case it wasn't a new build and a service plate existed at end of my drive ready for cable, if this isn't the case on your new build then you may have to have that installed also.
Personally I've seen much better offers with other providers, however depends how you look at it, Virgin do give faster uploads but depending on where you live other providers will be better for many people.