September 2010 - 3 partners and 7 staff join McGrigors in Manchester, bringing the total number of people in the office to around 35.
October 2009 - 10 Partners and 75 staff join the Belfast office from L'Estrange & Brett, one of the oldest and largest firms in Northern Ireland, specialising in commercial property, corporate work and litigation. The merged firm will be Northern Ireland's first major law firm to offer national reach.
August 2008 - 4 Partners and 13 staff join the London office from Reid Minty LLP, a boutique London litigation practice.
January 2008 - In response to Client demand McGrigors opens an office in Manchester.
October 2007 - McGrigors Belfast converts to an LLP, although not the first practice to be recognised as an incorporated practice by the Law Society of Northern Ireland, it is the first LLP.
October 2006 - the firm becomes a multi national legal practice (MNP) recognised by the Law Societies of England & Wales and Scotland, and converts to a limited liability partnership. McGrigors and McGrigors London cease.
April 2006 - 12 partners and 42 staff join McGrigors and McGrigors Aberdeen office opened.
February 2004 - the firm became known as McGrigors - prior to this, it had been known as McGrigor Donald in Scotland (Glasgow & Edinburgh) and Belfast and KLegal in London.
March 2002 - the McGrigor Donald London partnership merged with, and became known as, KLegal.
2000 - Belfast office opened, and McGrigor Donald Belfast partnership formed.
1999 - KLegal was founded as the UK law firm associated with KPMG.
1988 - McGrigor Donald opened a London office. An English practice associated with the firm is started - Stephen Kingsley & Associates.
December 1987 - name change to McGrigor Donald.
February 1985 - McGrigor Donald & Co merges with Moncrieff Warren Paterson & Co to commence business in new offices in Pacific House as McGrigor Donald & Moncrieff.
1978 - McGrigor Donald & Co opened Edinburgh office.
1871 - Glasgow law firms of McGrigor, Stevenson & Fleming and C D Donald & Sons merge to create McGrigor Donald & Co.
1826 - Hugh & Robert Moncrieff merge their existing practices.
1824 -William Lindsay (of Oatlands) assumes Hugh Moncrieff as a partner, but dies within a year.
1821 - Robert Moncrieff and James Finlayson commence practice as Moncrieff & Finlayson.
1801 - John Maxwell (of Dargavel, and son of John below),suffering from a paralysis, hands over his law practice to Colin D Donald (1777–1859) (a cousin). CDD was trained by James Dundas CS. James was the father of John Dundas who with Charles Wilson founded Dundas & Wilson.
1792 - Alexander B McGrigor commences practice.
1782 - William Lindsay (of Oatlands) commences practice.
1769 - John Maxwell (of Dargavel) known as John Maxwell Jnr to distinguish him from fellow lawyer and relative John Maxwell (of Fingalton) commences practice in Glasgow.