Yes, there are about 500,000 Sikhs in the UK
There are approximately 225, 000 Sikhs in Canada that make about 0.6% of the nations population.
Sikhs began moving to England in the early 20th century in search of economic opportunities and employment. Many Sikhs found work in industries such as agriculture, manufacturing, and transportation. Additionally, political unrest and persecution in India during that time also contributed to Sikhs seeking a better life in England.
Approximately 250,000 Sikhs live in Britain where they form the largest Sikh community outside India. But it says on wikipedia there are 750,000 In the UK, there are approximately 500,000 Sikhs (see related links below for source.)
Sikhs have gurudawaras
Sikhs is not real
Since the meetings are of Sikhs, so usually Sikhs are present there.
Sikhs join the Khalsa.
Yes Sikhs have weddings.
Sikhs wear a kara, kirpan, kaccha, kanga, and kesh to show that they are Sikhs and that they are proud.
The Gurudwara is a place of worship for Sikhs.
Sikhs only cremate.
If you are talking about Newcastle in the North of England then there is a Gurdwara on Mansfield St. near the Sports Direct Arena. (St. James' Park)