Actually Howard - because of the demand the shares will be priced at the top of the range worked out by the market makers, the correct response to the demand.
http://www.bbc.co.uk/news/business-24462388
Pricing a company is always a balance and one not easy to achieve. It is not unusual for new flotation share prices to shoot right up in response to initial demand. In fact it is quite common and is not something specific to privatisations.
Incidentally - you should be pleased if the price shoots up because the remaining government owned stock will rise in value alongside it. Further sales of the government holdings will reflect the actual price.