Your article about bicycle maintenance (The Filter, 14 October) quotes Ryan Elson saying that Kryptonite locks are “proven to stop even angle grinders”. I’d like to see the proof. A few days ago I got back to the station to find my bicycle gone and my Kryptonite lock cleanly severed not once, but twice, surely by cordless angle grinder. The police aren’t investigating.
Jon Blower
London
• I agree with Tim Martineau that In Our Time is a great soporific (Letters, 12 October), but I can’t be the only one to have dozed off to Melvyn Bragg’s dulcet tones only to be woken, as the programme ends, with that irritatingly loud and cheerful jingle advertising “BBC Sounds: music, radio, podcasts”.
Marilyn Rowley
Manchester
