On 4 July, a petition was presented to Parliament demanding the resumption of negotiations with Charles, and on the same day, Rich and George Villiers, 2nd Duke of Buckingham raised 400 cavalry in an attempt to seize London. This was insufficient for the task and the Royalists retreated through Surrey, before being intercepted and scattered outside Surbiton by Sir Michael Livesey. Rich and 200 men reached St Neots on Sunday 9 July, along with Colonel John Dalbier, an experienced German mercenary who served with him in the 1627 Saint-Martin-de-Ré expedition.