Shared ownership gives you legal rights as the leaseholder, so you cannot simply be removed from the property without cause.
However, serious mortgage arrears, rent arrears or breaches of lease terms could lead to legal action or repossession, in the same way as other mortgaged properties.
Your home may be repossessed if you do not keep up repayments on your mortgage.
You may have to pay an early repayment charge to your existing lender if you remortgage.