Turns out, The Daily Mash was spot on accurate.
From the Evening Standard:
Lucy Pendleton, director of south-west London agents James Pendleton, said: “We had one person whose offer of £358,000 on a flat in Wandsworth was not acceptable at 12.30pm increasing it by £5,000 to £363,000 at 2.30pm.
"That was as a result of the stamp duty relief — the offer was accepted.”
However, there were fears that the change would stoke up the lower end of the property market, making it even harder for less affluent buyers.
"Fears"?