It is worth noting that you do not
have to swear an affidavit - it depends on your intentions for future flying.
LASORS 2010 Section A (top of p24) refers:
Originally Posted by CAA, in LASORS
Lost Flying Logbook
Individuals who have lost their logbook(s) and are
intending to obtain further licences/ratings will be required
to obtain a Sworn Affidavit, completed through a solicitor
or Commissioner of Oaths, detailing their flying hours to
the best of their knowledge. The flying hours should be
detailed into categories in conjunction with the applicable
licence requirements. This is required in order for us to be
able to confirm flying experience when a further licence
is applied for.
Individuals who do not intend to obtain any further licence
(i.e. ATPL holders) are not required to obtain a Sworn
Affidavit, but may wish to start a new logbook.
Been there - everything is easily replaceable except the logbook.
I now take a digital photo of each page, as suggested above, but I feel your pain...