The Perivale Clock Manufacturing Co Limited, of Wandsworth Road, Perivale, Middlesex used the "Anvil" trademark. The anvil trademark appears on the bottom right-hand corner of the back plate. Their clocks were marketed by Andrew and Co. Limited 67 to 68 Hatton garden London.
Their range included movements for eight-day or fourteen day striking and bracket clocks, ting tang striking on three rods, combined Whittington and Westminster chimes as well as modified versions of these for small long case clocks (familiarly referred to as grandmother clocks) or just simple 14 day timepieces and dial clocks.
The Westminster quarter chime movement was first marketed in 1934.
The "Britannia" trademark was in use for Perivale clocks in 1937 when they were being a marketed by the Bentima Co Ltd..
The method of regulation peculiar to these clocks appears to be somewhat complicated but it enables the pendulum length to be adjusted by means of a small lever through a slot in the dial above the figure 12. Other features include a lead pendulum and Bob encased in brass; pillars secured by nuts; barrels easily detachable by letting down the spring, and removing two screws on the strap plate without further disassembly of the movement; self-correcting chimes and provision for chime / silent.
At present I have no information as to when the company started trading. It offered a clock of good quality during the 1930s. I have a copy of an advert issued in 1940 but I do not think that the company survived the war. Correction April 2010 I have just received an email from Stan Marsden who says " Perivale Clocks did survive WW2. I was there when we switched from small "self - wind" clocks for cockpits of Hurricanes / Spitfires etc., to Westminster Chime mantle - clocks. I can still hear hundreds of them chiming on the racks - worse than the Blitz !.