“We were at the edge of divorce when I decided to try this. Years and years without delight of orgasm and sexual satisfaction. This could ruin any life but not ours. Viagra worked and I always keep the pill near my bed as nobody knows when my wife asks ...

“I take 20 mg Cialis pill and it works as expected but after sexual intercourse I sometimes feel muscle pain in the back and fatigue. I do not know if this is because I work like a stud or it is a side effect. Anyway I am lucky that I gave it a try.”

Resident doctors will walk out for five consecutive days from 25 July over a dispute about pay.

Data for the NHS in England shows the waiting list for gynaecology is one of the largest.

The method was pioneered by UK scientists to overcome devastating, often fatal inherited diseases.

The government wants to invest billions to make the National Biosecurity Centre the largest in Europe.