I need another slice of humble pie! - even though I did some research it wasn't enough
I have now found a definitive source and of course you are correct.
What is also interesting to discover is that the threshold turnover demanding VAT Registration is nearly 60% higher than it ought to be. According to on-line inflation calculators, the £5,000 threshold that was the initial figure (1973) is now worth £53,582 whereas today's registration threshold is £85k. I have to presume that this is down to the cost of administration.
In 2000 I had a turnover of £185k so well above the threshold but, being semi-retired, last year's T/O was sub £6k - but I still retain my registration getting a rebate about every other quarter