If you've paid into the in-house AVC fund, you must transfer this to another pension scheme or leave this with the in-house AVC provider. If you transfer your AVCs to any other scheme, your investment options will depend on your new scheme rules.
Please note that your AVC fund may be transferred out at any time before your main Scheme benefits. In addition, your AVC fund, providing you've stopped making AVC contributions, may be transferred out whilst you're still a contributing member of the main Scheme.