UK employees are entitled to join the company’s group personal pension scheme, which is provided by Scottish Widows. Payments are made via payroll each month, and thoughtbot will match any contribution you make up to 5% of your salary. Basic rate tax relief is applied to your contributions by Scottish Widows. If you are a higher rate tax payer, you can claim additional tax relief via your self assessment tax return. If you do not currently complete a self assessment tax return you can contact HMRC to let them know you want to.
You may be required to choose between different levels of investment risk when setting up your pension: thoughtbot cannot advise you on which is the most appropriate for your personal situation (but Scottish Widows might be able to help).