Mothercare currently have Phil & teds Sport (Red or black) on sale.
You can get all the above as follows:
Sport pushchair £259.99
Double seat £65.99
Double Raincover £21.99
However there is code for 10% off (AF8 - thanks to OP on here) which brings total to £349.95
Taking into account 6% quidco, the amount paid calculates to £329. That is the best price I have been able to find.