When I did my PPL I used one of those crappy little blue logbooks that come in the starter packs along with the Trevor Thom manuals. I realised just before starting my professional training that I needed a bigger book with more columns to record single, multi, IFR, night, sims, P1, P2, PICUS etc etc. I opted for a Jeppy professional version which suits my needs. Splitting your time out into the right columns from the outset makes it a hell of a lot easier when it comes to form filling for the CAA.
All I did was rule off the old book and add up all the totals then carry them forward to the new logbook. When I needed to submit my logbooks to the CAA for CPL and IR issue I sent them both and they were fine with it.