It looks like ASDA have changed supplier for PP9 batteries from Rayovac back to EverReady. The Rayovac PP9's were being sold by ASDA at £1.69p each but to get rid of old stock they were recently discounted to 84p each. If you rush to your local ASDA you may find a few still on the shelf at 84p. The EverReady PP9's (Reds) now stocked by ASDA are being sold at £3.49p (IIRC).
B&Q still stock Rayovac but at £2.48p so they are currently the lowest priced.
Halfords stock PP9 batteries currently at £2.99p. The PP7's they used to stock seem to have been taken from the shelves so maybe they no longer sell them.
Maplin Electronics still stock PP7 and PP9 batteries at the same price of £2.99p.
The need for this section of my website arose after email conversations with collectors in other countries made me suddenly realize that not all batteries are common throughout the world. In most countries the 1.5 volt flashlight cells are standard and usually known as D, C, AA or AAA cells from the largest to the smallest. However, what about the ones currently popular in the UK such as PP3, PP9 or PP7, and what about the ones that were once popular in the UK such as PP1, PP4, PP6 or PP11 but are no longer available? The situation gets even worse when you consider batteries for valve radios, HT batteries of 60v, 90v, 120v, LT batteries of 1.5v, 7.5v and mixtures of both in combined HT/LT batteries. Add in the different battery manufacturers and the range becomes immense.
So what do you do if your newly acquired radio uses a 4.5v+4.5v PP11 battery that has a 4 pin connector? Cut the battery wires and solder new connectors on? Well this section should enable you to construct a facsimile of a PP11 by printing out the image on a colour printer and using scissors and a bit of glue (and ingenuity in the case of the connector), plus modern cells that can be contained within the constructed battery, and what have you got? A period battery for your period radio.
Other batteries will be included as and when they become available. If you have a battery not on the list then I would appreciate a scan of it (at 200 dpi) opened out, so with your help other radio collectors can construct period batteries for their period radios. Email scans to me
Many thanks go to Bill Morris for his help with scans of American batteries.