Hi Arthur,
sorry to disagree on this point.

But as the law of the UK does not prevent one from changing their name, for any reason, other than for fraudulent ones, they cannot be penalised for doing so.

Maybe this from the Home Office would be helpful.

http://www.ukba.homeoffice.gov.uk/sitecontent/documents/policyandlaw/nationalityinstructions/nisec1prosec/names?view=Binary

Extract:-

NAMES
1. Change of name: how it can be done
1.1 There is nothing in the law of the United Kingdom to prevent people from
changing their name simply by using another one and gradually
becoming known by it. A person who wishes to evidence the change
may do so by advertising it in the local press, by making a statutory
declaration, or by executing a deed poll.

2. Procedure where an applicant for citizenship sends in documentary
evidence in different name(s)

2.1. Guidance issued with application forms advises applicants that they
should ensure that the details provided are correct, as these will be
entered on their certificate of citizenship. We would normally expect
the name used to be the one that is on a person’s official documents.
If the name that they are using is not the one that is on the current
passport, travel document or identity card, they are requested to
explain the discrepancy and send documentary evidence to show that
they are known by the name given, such as a marriage or civil
partnership certificate, change of name deed or other official
documents.

2.2. If we come across a case where the name used is different to that on the
official documents and this has not been explained satisfactorily, or at
all, we should contact the applicant/agent, by telephone preferably,
otherwise in writing, to request an explanation for the discrepancy. We
should point out that, if the name on a naturalisation certificate does
not match other official documents, this may cause difficulties in
applying for a British passport. If a person does not agree to have
official details included on the certificate, the case should be discussed
with an EO caseworker or Senior Caseworker. The details of the
telephone conversation and our decision should be clearly recorded on
CID. Where a change of name has taken place, we should normally
ensure that the name at birth is included on the certificate, although
this can be omitted if there is a good reason for this, e.g. because the
person has been adopted or is no longer living in the gender they were
considered to have at the time of their birth.