Buy one large pizza express pizza, one box of Gu luxury desserts, plus 8 other unique items....
I bought 2x diff pizza , 2x diff desserts, plus single items of fruit...
Meal deal is officially £5 for both the pizza and desserts, but brand match is taking £4 off each deal.
I got 4. Fill your boots :)

Saw this on Facebook, so credit to them. Wanted to check was working before posting. Sorry, am working now but will add exact items I bought later.

* this is reported as still working today. To make the absolute most of this deal, buy-

5 X pizzas ( of the 2 varieties)

5 X desserts in 3 or 4 varieties ( GU CHOCOLATE & VANILLA CHEESECAKE 2X90G
GU LEMON CHEESECAKE 2X90G
GU-ZILLIONAIRE DESSERT 183G
GU KEY LIME PIE RAMEKINS 2X85G)
(thanks, kingmart)

5x 10p sweets ( 5 DIFFERENT sweets, with different barcodes )

= this will come to £5.50
* or get X 6 different if you're in a hurry/ at all nervous/ or they only have one variety of pizza.

Instead of the sweets, you can get 5 different single fruit or veg items. This will be a little different in price.

Thanks to all who contributed in honing down this deal to the maximum value for other users, and for reporting where there is stock

YOU NEED A MINIMUM OF 10 UNIQUE ITEMS FOR THIS TO WORK SO IF YOU BUY 1XLARGE PIZZA AND 1 DESSERT FROM THE ABOVE LIST FOR EXAMPLE YOU THEN NEED AT LEAST 8 OTHER ITEMS SUCH AS 10P SWEETS THAT ARE ALL DIFFERENT OR 1XBANANA 1XCARROT 1XONION ETC BUT STILL TOTALLING 10 UNIQUE ITEMS.
- deb8z

WON'T WORK IN EXPRESS STORES OR IN NORTHERN IRELAND.
- deb8z