Thankyou BiillieBob and hoodie for your answers.
but, in the case of the LAPL, there is no class or type rating and validity depends upon recent experience, which is only recorded in the logbook
Of course the same can be said of any licence or rating. Validity depends on recency. The LAPL is not different then.
"A pilot or student pilot shall, without undue delay, present his/her flight time record for inspection on request by an authorised representative of the competent authority."
Again not specific to LAPL. I guess some people want to interpret "undue delay" as "immediatley to hand". Bottom line is the logbook is not required to be carried and nobody has been able to cite a regulation stating that it does.