Mike discovers a tiny Cold War spy camera that can be worn on the wrist. The Tessina 35 was the smallest 35mm camera ever made and a fine example has come in from the cold at London's Portobello Road market. Read how to spend £500.

According to estimates made by Benedict Evans, more photographs will be taken this year than in the entire history of film photography. As Ben admits, there are no easy statistics, but he has extrapolated what we do know. For instance social networks now share enormous numbers of photographs and statistics are available.

After the best part of a month in Greece with clear blue skies and temperatures in the late eighties, arriving back in London was something of a shock. Autumn seems to have landed early and today's "Summer" bank holiday was a total washout. Father Thames was perched high and susceptible areas, such as Chiswick Mall seen in these photographs, was an early casualty.

I’m grateful to reader Keith for some background on the success of Apple Pay in the UK. He sent me a useful link to a City AM article which lists all known companies currently prepared to accept Apple Pay transactions. It is clear that the number is growing by the day. While NFC transactions in England (probably also in other parts of the UK) are to rise from the £20 limit to £30 during September, there is good news that certain retailers are prepared to accept higher-value business if the more secure Apple platform is used (as opposed to the normal swiped credit card which is susceptible to use by thieves until stopped).