am thinking about waxoil treatment for my beloved 110 DC. assuming its worth the money ?
and can anyone recommend someone to do it in south Essex ?

Interested in an answer on this for my P38 also.

I see there is a Dinitrol application place in Benfleet (my home town) but its business name is "Just Taxis" so perhaps this is a clue and maybe they only do Taxis.

I have never paid someone to do it and always done it myself, but I have a compressor. It is the prep work which is the important part of the waxoil treatment. The chassis needs to be clean and dry before it is applied. If you are paying to have it done you need to make sure they are treating the inside of the chassis, bulkhead and doors they rust from the inside out. Just making the outside of everything black will not protect it.