This is my first time posting so please excuse me.
If you join AA you can get £15 of M&S Vouchers quoting '6713' then '6356 0155 3764 1775'.
or you can ring 0800 107 0004. It is that simple.
The vouchers are subject to availability and while stocks last so best hurry and get your hands on them.
Hope this helps people that needs that little extra because it did for me!