It is possible, and the person to whom you wish to transfer shares must sign up to the Crowdfunds site, pass the appropriateness test and provide ID. Once their account is set up, email support@crowdfunds.net with the following details:
It’s important to note that if the share cost is more than the HMRC threshold (currently £1,000) then Stamp Duty will also need to be paid. Once you have emailed our support team, they will provide you with details of any amounts that need to be added to either the seller or buyer's account. Once added, they will be redeemed so that the transfer of shares can be completed. We recommend you take advice.