Lancaster City Museums' Court Interior by ‘S. Dulla’ fell under Alistair's sharp eyes in 2015. He recognised it as the Senate Room at the Doge’s Palace, Venice, and the artist as Giovanni Battista dalla Libera (1826–1886), from his signature. This is the only work by the artist on Art UK. A comparable work is his Sala della Bussola, which was at Sotheby's in 2007.

In 2019 another contributor, Kieran Owens, had sent us the full name and life dates for the sitter, Charles James Kennedy Osborne Scott.

The following year, Pieter van der Merwe (leader of our Maritime Subjects discussion group) suggested that since a recent Art Detective discussion had re-identified both the sitter and artist of the (1925/6) bronze bust at Trinity Laban as Charles Kennedy Scott by Mary Morton, we might seek suggestions on the painter of this later-life portrait of Scott. Alistair promptly found a very faint and small signature lower right, and matched it and the portrait style to that of Henry L. Gates (1872–1943).

This view, by an artist in the circle of Jan van Goyen, was previously known as River Scene with a Tower. Alistair identified the building as the Pellecussenpoort (Pellecussen Gate), near Utrecht.

In 2015, Alistair pointed out a similar portrait in the collection of Highland Council, Called Clementina Sobieska. Although bust length and poor quality, the details in the dress were the same. Further research revealed a line engraving by Jean Aubran after Adraien van der Werff, published in 1697 (NPG D30805), titled Mary of Modena. Highland Council's record was updated to say that although the name 'Clementina Sobieska' was written in pencil on the modern label on the back of the painting, it was now suspected to be Mary of Modena and a copy of a portrait seemingly known only from an engraving. Both artist records were duly updated.

In 2014, Alistair recognised A Stately Interior at Buxton Museum & Art Gallery as the White Drawing Room at Buckingham Palace. He also supplied details of the fine desk in the foreground. It is by Jean Henri Riesener, cabinet maker to Louis XVI and Marie-Antoinette, and was part of the great collection of eighteenth-century French works of art acquired by George IV. It has been in this position in the room for a number of years. In 2016, Cliff Thornton identified the artist as Herbert Davis Richter as well.

In 2016, Alistair identified Portrait of a Lady with a Broken Pitcher by an unknown artist as a copy, in reverse (generally after a print, but this would also happen copying the original on glass), of La cruche cassée (The Broken Pitcher) by Greuze. The original is in The Louvre and there are several copies on Art UK, variously titled.

Alistair researched a series of nineteenth-century paintings owned by Hereford Museum and Art Gallery, each entitled Theatrical Figure . He found that this was a copy of Thomas Charles Wageman’s portrait of the actor William Charles Macready (1793-1873) in the role of King John by William Shakespeare, probably based on a c.1830 print (V&A, S.1342-2013). Another (Hereford Museum acc. no. 8434/2) had the title expanded to Theatrical Figure (Macheath from John Gay’s ‘Beggar’s Opera’) and the artist listed as ‘after Henry Liverseege’, based on a mezzotint by William Ward (V&A, S.1095-2009)

Newton Town Council’s Allegorical Scene by an unknown artist presented Alistair with an irresistible challenge. He found that it depicted Jael and Sisera (‘the peg and mallet are the giveaway’) and suggested that ‘without being an expert the work looks as though it could be 17th–18th century Italian’.

As described in the Book of Judges, the scene shows the Hebrew heroine about to kill the commander of the Canaanite army – and thereby deliver Israel – by driving a nail into his head with a hammer.

Alistair was able to tell National Museums Northern Ireland that its Portrait of a Lady in a Floral Dress Washing Clothes by an unknown artist was a copy after Henry Robert Moreland's A Lady's Maid Soaping Linen.

There are autograph versions, dated to c.1765, in the Tate collection, the Holburne Museum in Bath, and the Lady Lever Art Gallery in Port Sunlight.