I know Rhye has already done the English cities, but I thought I'd offer what I think is an improved version. For the home cities, I concentrated on including all British cities of the greatest historical political and economic importance. For the colonial I wanted to include a more representative sample of economically and politically significant British-founded cities from different regions and time periods.
HOME INLAND CITIES
Bath, c. 43, Roman
York, 71, Roman
Manchester, 79, Roman
Newcastle, 120, Roman
Nottingham, c. 550
Edinburgh, c. 600 *
Birmingham, c. 600
Norwich, c. 650
Lincoln, c. 650
(Oxford, c. 750)
Coventry, 1043
HOME PORTS (includes cities on rivers close enough to the sea to allow them to become major ports)
London, 43, Roman
(Gloucester, 48, Roman)
(Exeter, 50, Roman)
Southampton, c 50, Roman
Cardiff, 55, Roman *
Glasgow, c. 550 *
(Ipswich, c. 600)
Aberdeen, c. 750 *
Bristol, 1000
Hull, c. 1150
(Portsmouth, 1180)
Liverpool, 1207
Plymouth, 1235
Belfast, 1609 *
COLONIAL INLAND CITIES
Philadelphia, 1682, USA **
Toronto, 1787, Canada
Edmonton, c. 1790, Canada
Ottawa, 1800, Canada
Winnipeg, 1809, Canada
(Ladysmith, 1850, South Africa ***)
Alice Springs, c. 1870, Australia
Kimberley, 1871, South Africa
Salisbury (now Harare), 1890, capital of Zimbabwe
Blantyre, 1891, Malawi
Livingstone, c. 1895, Zambia
COLONIAL PORTS
Boston, 1630, USA **
Providence, 1636, USA **
(Bridgetown, 1654, Barbados)
Kingston, 1692, Jamaica
Baltimore, 1729, USA **
Georgetown, 1781, Guyana
(Freetown, 1787, Sierra Leone)
Sydney, 1788, Australia
(Port Elizabeth, 1820, South Africa)
Brisbane, 1824, Australia
Auckland, 1840, New Zealand
Vancouver, 1863, Canada
(Port Moresby, 1873, Papua New Guinea)
SUGGESTED COLONIAL CITIES BY COUNTRY
USA: 5
Canada: 5
Australia: 3
South Africa: 3
Zimbabwe: 1
Malawi: 1
Zambia: 1
Barbados 1
Jamaica: 1
Guyana: 1
Sierra Leone: 1
New Zealand: 1
Papua New Guinea: 1
* These cities are Scottish, Welsh or Northern Irish. To my mind a civ which includes these cities should be called 'British' not 'English'. In case Rhye wishes to remove these cities, I've included extra English cities in the lists where they appear.
** These cities are now American. I've included extra British-founded cities in the list where they appear, in case Rhye prefers them on the American citylist.
*** Founded by Boers, but annexed and renamed by the British within a year
(city name) Cities in brackets are ones that I recommend removing if the US, Scottish, Welsh and Northern Irish cities are retained, in order to keep the lists down to ten cities in each category.