What to do if you can't find my pension?
If we haven’t been able to help locate your previous pensions, there are a couple of steps you can take to try and find them
Search through old employment contracts, payslips, bank statements, or P60 forms for a provider name or policy reference number
Reach out to the HR or payroll department of your old workplace with your exact dates of employment to ask which pension provider they used.
Go to the official GOV.UK Pension Tracing Service to search a database of over 200,000 pension schemes.
If you manage to track down your policy you can use the policy details to start a transfer to your Monzo Pension.