It seemed a strangely covert arrangement and Arthur was tempted to turn the offer down politely, for fear that he would be seen as something of a conspirator if the ruse was discovered.

Pitt lowered his voice and leaned closer. ‘Sir Arthur, I do not make this suggestion lightly. I was impressed by your directness last night. In government one finds oneself surrounded by placemen, and those who would be placemen. They cut the cloth of their advice to suit their audience, and I would be glad to hear a more honest opinion on two pressing matters. Now then, will you drive with me?’

Arthur stared at the Prime Minister for a moment and came to a decision. He nodded.

‘Very good, then I shall see you later.’ Pitt leaned back and raised his voice. ‘A pleasure to meet you in person, Sir Arthur. I wish you a safe trip back to London.’

They exchanged a brisk shake of hands before Pitt moved off, heading for his host to take his leave. Arthur waited a moment before he followed. Buckingham clasped Arthur’s hand and composed his features into an expression of regret.

‘It is a shame that we did not have time to talk properly, but events have overtaken us. We will speak again soon, you have my word.’

‘Thank you, my lord. I will look forward to the occasion.’

‘As will I.’ Buckingham looked meaningfully at his guest. ‘In the testing times that lie ahead of us a man should be careful that he picks the winning side. Eh?’

Arthur smiled. ‘It is always my intention to win the struggle against the French, sir.’

Buckingham frowned. ‘I was referring to conflicts somewhat nearer to home.’

‘Of course, my lord. I misunderstood,’ Arthur replied smoothly, and then bowed his head. ‘I thank you for the invitation to your house.’

Lord Buckingham smiled graciously and acknowledged the bow before turning to the next of his departing guests. Arthur made his way out of the salon and into the entrance hall. A small crowd of guests stood in clusters with their baggage while they waited for their carriages. Footmen hurried in and out of the door, laden down with bags, chests of toiletries and hat boxes. To one side, Arthur spotted the Sparrows, but before he could avoid their gaze and move off Olivia caught sight of him and raised her laced glove to wave excitedly.

‘Sir Arthur! Good morning to you!’ Pulling on her husband’s arm, she hurried across the hall towards Arthur, who stood torn between a desire to hurry off for his meeting with Pitt and the obligation to be well mannered. Stifling a weary sense of resignation, he smiled a greeting.

‘Good morning to you, madam. Good morning, sir.’

‘Joining the stampede back to London, Wellesley?’ asked General Sparrow. ‘It’s going to be busy on the turnpike this morning, eh?’