Looking at the poll I'm surprised how many people are vat registered (almost 50% so far)
£60K is a good level of turnover, but even with the best will in the world your running costs, maintenance costs, advertising, etc, etc will eat into that by a fair amount.
Then, if you do manage to keep your costs down you are putting yourself into the higher income tax bracket.
Then, when you do come to retire what have you got to sell? A business with a turnover of £60K?, you might get £20K for it depending upon what contracts you have.
Going VAT registered is a BIG decision, however if your business is approaching the VAT threshold and if you want to have a business that is self sustainable for the long term with nothing to restrict you from growth, then you need to go VAT registered. We dillied and dallied around for about a year treading water to try and find ways to keep below the threshold, splitting the business in two, etc, however in the end we took the plunge and went for it. One of the best decisions I've made.
Now with nothing to hold us back our business is now turning over more that 3 times what it did this time last year, I would expect it to double again by this time next year. We now have 11 employees (and a wife) working for the business and I pay myself, as a director, a salary of £500/month, which keeps me on basic rate tax. I also get dividends from the business which attract corporate rate tax (20%), so I will never hit the 40% bracket.