216 East Main Street, West Lothian is the head office for Kwik-Fit (GB) Ltd.
As the kwik-fitinsurance.com/important-information.html (Important Information) on the Kwik Fit Insurance website says, it is also the registered office for Kwik Fit Insurance Services Ltd. However, the trading office appears to be elsewhere:
The Managing Director
Kwik Fit Insurance Limited
P O Box 007
Glasgow
G71 5PU
A search of the database for
kwik fit
returns the head office number 01506 856789, which going by the STD code is to the West Lothian address.
There is also an entry for "Financial Services", aka insurance, 01698 817000 which is the right STD code for the insurance office. You could try that, or look in the database results for 01698 numbers and pick the one that most fits the description of your enquiry.