At least for Cambridge area, it was worthy. Got a 95% mortgage about 3 years ago. I would say that for the first 2 years, about 60% of the monthly payments were just interest, but as the mortgage was the same as my rent at the time, at least I was paying something that I'm able to decorate and enjoy as it's my own.
Meanwhile, the house was priced about 10% cheaper than the likes, just because of a neglected garden and a horrid cream/magnolia paint and dark staircase. Sorted in about 2 weeks of work and few hundred pounds in paint and accessories. Last evaluation, about a year ago, the property was worthy slightly more than similar properties without a modern/fresh look.
In your situation, you have the choice to stay at your parents and save a bit more, but unless you're able to save substantially, the house prices may increase faster than your savings.
Just to have an idea, for similar price of my four bedroom mid-terrace, needing some updating would allow me just a newly built two bedroom mid-terrace, slightly smaller garden and potential to troublesome neighbours now and then, as a lot of those two bedroom houses in my area are a first step for new couples and most of them move after few years as family grow, so a nice neighbour may not stay there for too long.