Colin Crilly says that David Cameron and Boris Johnson have a "sinister agenda" ("Boris and Cameron have ‘sinister’ agenda,  May 28).

According to Mr Crilly, this is because Cameron "plans a seven-day health service", and Johnson "plans to make the Tube a 24-hour service at weekends".

He doesn’t say what is sinister about helping NHS patients and Tube travellers, but he should know that "sinister" is the Latin word for left.

So Cameron and Johnson pursue a "left" agenda. Shocking indeed!

Derek Blewitt

Banstead