Tradition and Innovation is a selection of 23 British paintings from the Royal Bank of Scotland Group Art Collection.

For these riches we must thank the banking merry-go-round in which the Royal Bank's take-over of the NatWest Group in March 2000 brought about the amalgamation of their corporate collections.

So there is a reason to welcome those vast bank profits after all!

Tradition and Innovation eschews the Royal Bank's works from the 17th, 18th and 19th centuries in favour of 20th century art, and more particularly post-Second World War art.

On show is a pageant of colour to rival the Harrogate Spring Flower Show and, more significantly, this rainbow riot of rarely seen large-scale masterpieces adds up to a beginner's guide to the key developments in bold British painting during the past 50 years.

Many of the premier league names are here: Salford rent collector L S Lowry, with his pre-occupied, scurrying match-stick figures and aversion to painting shadows; Graham Sutherland in non-royal portrait mode; Patrick Heron with one of his use-of-space projects; Patrick Caulfield and his claustrophobic, photo-realist roses that make this normally beautiful flower strangely threatening and alien; Anthony Whishaw, a landscape artist with an archaeologist's instinct for excavation; and Terry Frost, whose grimly atmospheric Corsham, Silver And White sees fit to drain out all the Cornish blues so often found in St Ives paintings in favour of funereal black, grey and off-white.

As with many works in Tradition and Collection, Frost's modus operandi is the application of oil on canvas.

Indeed, like an over-dressed salad, it could be said there is too much oil in this show, but perhaps the point being made is how British painters have brought myriad abstract innovations to this once formal painting tradition.

Hence the inclusion of newer exercises in the movement of oil by the likes of the Op Art-influenced Dan Hays, who has followed up his guinea pig pictures in last summer's Painting Here and Now show with two huge guinea pig cages, one in pink, the other in green, both devoid of any sign of its furry, squeaking inhabitant.

A particular favourite of viewers so far, judging by the comments book, is the Royal Bank of Scotland Group's newest acquisition, Lisa Milroy's Shoes.

Imelda Marcos would be overcome with excitement in the presence of this linear collection of desirable female footwear.

Milroy prefers to talk of a split-second freezing of a "rapid series of individual still moments, like frames in a film", but that's artists for you!