I live in Britain and as far as I know there arn't any restrictions to Sikhs not wearing turbans here.
Sikhs
only Sikhs
No,they don't.
Turbans
It is not a requirement for all Sikhs to wear turbans. Some women, however, do wear turbans as Sikhism promotes equality between both genders. Other women prefer to cover their head with a veils known as chunni instead.
A turban is a kind of heard wear that invovles cloth winding. Sikh consider wearing turbans as part of their religious practice. All Sikhs prefer not to cut there hair so can keep the hair tidy by wearing the turban.
Sikhs wear the turbans as a religious practice. They don't usually cut their hair hence they have long beards and wear the kind of turban called a 'pagri' to protect their hair from dust and to cover them up so they wont flash on their face while working.
The men wear Turbans. Woman can do too. Woman can also wear a veil or choose both.
There are Gurdwaras all across Britain for Sikhs to practice their religion.
No!
Jainism is polytheistic, while Sikhism is monotheistic.
A Sikh man is not allowed to cut his hair and the head must covered. Every man is to wear a turban. Covering long hair with a turban helps to protect it from becoming tangled, or coming in contact with pollutants.