lighting job turns into major rewire?? - fair?

baldelectrician

May I suggest you get a price for someone to do the whole job

You could have the ceiling done and cut the holes for the spots in tha appropriate places. You could just have a pendant set hanging down until you get the lights done

if you get someone (registered and qualified) to do the whole job then there is one point of contact and one person where the buck stops

You should use a competent person for the work, links below
In Scotland:
Individuals registered;
http://www.sbsa.gov.uk/register/ListAC.asp
Companies
http://www.sbsa.gov.uk/register/SearchRegCo.asp?T=Construction
In England and Wales:
http://www.competentperson.co.uk