On this point there is no evidence.

But it is certain that the advance made after this deputation had been received rendered all further negotiation impossible, as it inspired the Commons with the greatest distrust, and enabled the violent portion always to feign a doubt of the king's word, and great fears as to the keeping of any terms which might be made, and so to act upon the timid and wavering.

The very day after the deputation had left, bearing the news to London of the king's readiness to treat, and inspiring all there with hope of peace, Prince Rupert, taking advantage of a very thick mist, marched his cavalry to within half a mile of the town of Brentford before his advance was discovered, designing to surprise the train of artillery at Hammersmith and to push on and seize the Commons and the city.
The design might have been successful, for the exploits of Rupert's horse at the battle of Edgehill had struck terror into the minds of the enemy.

In the town of Brentford, however, were lodged a regiment of foot, under Hollis, and these prepared manfully to resist.

Very valiantly the prince, followed by his horse, charged into the streets of Brentford, where the houses were barricaded by the foot soldiers, who shot boldly against them.