Contact Lycamobile customer services by dialing 322 (93#) from your Lycamobile phone (07973101321 from another phone or +447973101321 from abroad) and ask for your PAC code (Porting Authorisation Code) before you cancel your service with Lyca mobile. Alternatively you can email them at firstname.lastname@example.org with your request.
Once you have received your Port Authorization Code from Lycamobile, look for the best offer that is suited to you. Many of the best mobile phone deals are available exclusively online, directly from the network providers listed here.
Finally, provide your PAC code to your new mobile network operator who will then be able to port your existing phone number from Lycamobile. They will tell you what day the transfer is due to take place (usually within 48 hours).
Important: Do NOT cancel your contract before switching, otherwise you might not be able to port over your number. Once you provide your new network provider with your PAC code, your old account will automatically be cancelled when the number is migrated over.
Note: Credit on a PAYG (Pay-As-You-Go) account cannot be transferred and any remaining credit will be lost after the switch over.
Need some help? Ask over at the new Mobile Phone Forum