One way of achieving this is through Recognition of Prior Learning or RPL. The current RE CPD policy on RPL is available on the RE CPD website under the Resources tab.
Note that you will have to provide evidence that you are current and up to date in your trade in order to be upgraded. It is not an automatic process.
This will require a letter of endorsement from an appropriate person, see the policy for further details. Click here: https://re-cpd.org.uk/rpl/ to find out more. See if RPL could benefit you!