The Prime Minister welcomed Mike Thornton, the new MP for Eastleigh - but only for the duration of this Parliament.
Two Lib Dem MPs - Martin Horwood and Sir Bob Russell - asked Mr Cameron about the Eastleigh by-election, and both tried to have a bit of fun at the Prime Minister's expense.
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Friday Evening's Pollen Forecast
Young sufferers of Duchenne muscular dystrophy will now have to wait months to find out if Translarna will be available to them on the NHS.
Friday night's forecast for the east of the region