I look a little odd carrying a handbag, personally
No objection to being called out when I'm wrong - it's a fairly common occurrence in my line of work
For those that want the specifics.....
The Road Vehicles Lighting Regulations 1989
SCHEDULE 11
PART I
Requirements relating to obligatory rear fog lamps and to optional rear fog lamps to the extent specified in part ii
1. Number:
One
2. Position–
(a) Longitudinal:
At or near the rear of the vehicle
(b) Lateral–
(i)
Where one rear fog lamp is fitted: On the centre-line or off side of the vehicle (disregarding any sidecar forming part of a motor bicycle combination)
(ii)
Where two lamps are fitted: No requirement
(c) Vertical–
(i)Maximum height above the ground–
(A)Any vehicle not covered by sub-paragraph (B): 1000 mm
(B)An agricultural vehicle, engineering plant and a motor tractor: 2100 mm
(ii)Minimum height above the ground: 250 mm
(d) Minimum separation distance between a rear fog lamp and a stop lamp–
(i)In the case of a rear fog lamp which does not share a common lamp body with a stop lamp: A distance of 100 mm between the light-emitting surfaces of the lamps when viewed in a direction parallel to the longitudinal axis of the vehicle
(ii)In the case of a rear fog lamp which shares a common lamp body with a stop lamp: 100 mm
3. Angles of visibility–
(a) Horizontal:
25° inwards and outwards. However, where two rear fog lamps are fitted it shall suffice if throughout the sector so defined at least one lamp (but not necessarily the same lamp) is visible
(b) Vertical:
5° above and below the horizontal
4. Alignment:
To the rear
5. Markings:
An approval mark
6. Size of illuminated area:
No requirement
7. Colour:
Red
8. Wattage:
No requirement
9. Intensity:
No requirement
10. Electrical connections:
No rear fog lamp shall be fitted to any vehicle so that it can be illuminated by the application of any braking system on the vehicle
11. Tell-tale:
A circuit-closed tell-tale shall be fitted
12. Other requirements–
Where two rear fog lamps are fitted to a motor vehicle first used on or after 1st April 1986 or to a trailer manufactured on or after 1st October 1985 they shall form a matched pair.
Also:
PART II
Requirements relating to optional rear fog lamps
1. In the case of a motor vehicle first used before 1st April 1980 and any other vehicle manufactured before 1st October 1979, any number may be fitted and the only requirements prescribed by these Regulations in respect of any which are fitted are those specified in paragraphs 2(d), 7 and 10 of Part I.
2. In the case of a motor vehicle first used on or after 1st April 1980 and any other vehicle manufactured on or after 1st October 1979, not more than two may be fitted and the requirements prescribed by these Regulations in respect of any which are fitted are all those specified in this Schedule.
Note these requirements are UK based, and pretty old - for vehicle construction standards for ECWVTA any variance in wording trumps UK requirements (at least for now!)
Bonus points if you know of a UK retailed car with a central rear fog (I can think of two off the top of my head)