UK House Prices: The Difference Between Asking Prices and Sale Prices

I just read an article on Property Wire about the asking price rise recorded by Rightmove in May. The author writes:

"The monthly data from property website Rightmove indicates that record low interest rates are enticing more into buying but job security and continued tight lending conditions are hampering any recovery."

How does rising asking prices show that more people are buying? And this is in an article headlining that residential property prices rise in England and Wales, asking prices and sale prices are two very different things, especially in a market downturn.

I cannot wait until the Land Registry releases the figures from its house price index in April, so we can find out what prices were really doing last month.