Be cautious of anyone promising a guaranteed visa or outcome, pressuring you to pay immediately, refusing to provide clear written fees, or asking you to submit information you know is untrue. Check that a solicitor is regulated by the Solicitors Regulation Authority (SRA), or that another immigration adviser is regulated by the Immigration Advice Authority (IAA). You should receive a written agreement explaining the work, costs and likely timescales, although no adviser can guarantee a decision. If you are unsure, compare advisers and check the relevant register or seek independent advice through GOV.UK.