Someone said most League One teams keep their kit for ages, this is not actually the case, many teams actually have a new HOME kit every year as well as an away one. Swansea also bring out a new away kit every 6 months.
Also, lower league teams with the likes of Adidas and Nike actually do their deals with UK subsidary companies, the kind who do "Get a Nike kit for your team!" deals. You'll notice they're just the same design on all of them but with different colours.
Here are some other League One kits, for comparison:
Carlotti - Scunthorpe Away
Adidas - Peterborough Home
Adidas - Peterborough Away Kits (note the black kit is exactly the same as Derby's away kit!!!)
Vandanel - Northampton Home
Vandanel - Yeovil Away
Nike - Hartlepool Away
Errea - Bristol Rovers Home
Errea - Cheltenham Home & Away
Puma - Leyton Orient Home & Away
Jako - Leicester Home
swift? - Walsall Home & Away
Mitre - Huddersfield Home