Phil Jones (Letters, 18 August) says that tidal energy cannot possibly provide baseload power, because it offers energy in “four three-hour blocks a day”. Make that 80 three-hour blocks a day: the tide is a wave that takes 20 hours to move around the British Isles. True, one tidal project can’t provide baseload on its own – but Jones asks you to believe that tidal power can’t do it, period. That’s inaccurate.
David Robjant
Bedford
• There is indeed a problem of obesity in this country, and many different suggestions for tackling it (Letters, 19 August). Isn’t it rather counterproductive that a large audience is eagerly anticipating The Great British Bake Off – a programme dedicated to making us eat cake?
Julia Reisz
Walberswick, Suffolk
• Might I be permitted to add a further caveat to Gavin Haynes’s guidelines for Boris Johnson as “acting prime minister” during Theresa May’s alpine sojourn (Shortcuts, 17 August)? He must advise her in the strongest possible terms against visiting the Reichenbach Falls. The consequences for the nation do not bear thinking about.
Austen Lynch
Garstang, Lancashire
• I was shocked by the picture of Michael Gove (Why Michael Gove’s beard offers him the road to redemption, 19 August). He suddenly looks human.
Christopher Price
Gillingham, Kent
• Would it not be appropriate for the police investigation regarding the three feet discovered in Bath to be done by the Yard (New appeal for help over discovery of human feet, 19 August)?
George Barrow
London
• I recently went to a supermarket in London to buy stamps and received a book of Christmas stamps (Letters, 18 August).
Madeleine Hilton
Leeds
• I say knickers to brief letters (Letters, 19 August).
Louise Morrey
Dronfield, Derbyshire
• Join the debate – email guardian.letters@theguardian.com