The late politician's senior caseworker, Sandra Major, who witnessed the killing, receives an MBE for parliamentary services and service to the community in Batley and Spen.
The policeman killed confronting an armed jihadist who attacked Westminster has been awarded a posthumous George Medal for his exceptional bravery.
Comedian Billy Connolly was given a knighthood and actress Julie Walters was made a dame in this year's Queen's Birthday Honours.
Ed Sheeran receives an MBE for services to music and charity.
Oldham-born actress Sarah Lancashire was awarded an OBE for services to Drama.
Oscar-winner Olivia de Havilland, who turns 101 next month, is the oldest woman to become a dame in this centenary year of the modern-day honours system. The full Queen's Birthday Honours List is available here.
Among those honoured, the Queen has awarded Harry Potter author JK Rowling The Order of the Companion of Honour.
Sheeran, 26, receives an MBE for services to music and charity, as does singer Emeli Sande, for services to music.
The man behind the biggest commercial radio group in the United Kingdom got the recognition for services to the Media Industry.
The principal of Belmont Nursery School in Londonderry, Jennifer Marshall, was also awarded an MBE for services to education.
Yorkshire-born founder of Iceland supermarket Malcolm Walker is knighted for services to retailing, entrepreneurship and charity, while brothers Brian and Alan Stannah, of family-run stairlift company Stannah Lifts, are given MBEs for services to British manufacturing.
Another name awarded this year is Melvyn Morris, a non-executive chairman of game developer King.
Half of this year's honorees are women, while 10 per cent are from black and minority ethnic (BAME) backgrounds.
TALENTED, dedicated and community minded Oldhamers have been named as award recipients in this year's Queen's Birthday Honours list.