Several of Cotton's designs were collaborative projects with one or more of his partners Frank Pennink, Charles Lawrie and Donald Steel. Cotton's best known work includes, but is not limited to:

BRITAIN & IRELAND:
Army GC, Hants (1974, with Pennink & Lawrie) / Cradoc, Powys (1967) / Downfield, Dundee (1964, redesign) / Frilford Heath GC (1964, Green course extension to 18-holes, with Pennink) / Ganton, N Yorks (1948 & '52, improvements) / Hexham GC (1951, redesign) / Pennard, W Glams (1964, modifications) / Ross-on-Wye GC, Herefordshire (1962) / St Pierre, Monmouthshire (1962, Old course) / West Lancashire GC (1960, redesign).

CONTINENTAL EUROPE:
Ascona GC, Switz (1960s, modifications) / Bergamo-L'Albenza, Italy (1961, with Martin Sutton) / Bologna GC, Italy (1959, with Cdr John Harris) / GardaGolf, Italy (1986, with Pennink & Steel) / Keerbergen, Belgium (1968, with Pennink & Lawrie) / Olgiata GC, Italy (1961) / St Knuds, Denmark (1954) / Venezia GC, Italy (1951, added second nine).

AFRICA/MIDDLE EAST:
Royal Tangier (1967, redesign with Frank Pennink).

The son of a Church of England vicar, Ken Cotton initially teamed-up with fellow architects Charles Lawrie and Frank Pennink, and then in 1965 Donald Steel was also brought onboard to create the golf course design firm of Cotton (CK), Pennink, Lawrie, Steel & Partners.