‘My supreme idea is to get on’, wrote the young David Lloyd George to his sweetheart, Margaret Owen, during their prolonged courtship. Ominously, he added: ‘I am prepared to thrust even love itself ...

Lover gone? Business on the ropes? Alone in a cruel, chaotic universe? Worry not – help is at hand. Or at least, so goes the offer of countless psychics, clairvoyants, witch doctors, holy men and ...