Sunday 2nd September
Sophie Christiansen won the individual Dressage Grade 1a, and with Deb Criddle, Sophie Wells, and Lee Pearson won the Team Dressage gold.
The Team Dressage stamp will use a picture from the medal ceremony which will take place on the evening of Tuesday 4 September. The stamp will probably be issued on Thursday.
Here's Sophie's own stamp, which we can now confirm will be issued as PGMW-F1.
Britain's David Weir sprinted to a sensational victory in the T54 5,000m to win his third Paralympic gold medal. This will be issued as PGMW-F2.
Monday 3rd September
Natasha Baker wins her second Paralympic gold with a new personal best in the Grade II freestyle dressage. This will be stamp PGMW-F3.
Ellie Simmonds powers to her second gold medal of London 2012 in world record beating time after victory in the women's individual medley 200M SM6. This will be stamp PGMW-F4.