A leisurely and serenely horizontal circular walk from Uxbridge north-westward to picturesque Denham Village, straddling 5 of the interconnected watercourses of the Colne Valley: Frayn’s River, the Shire Ditch, the Grand Union Canal, the River Colne, and, as we approach Denham, the renowned Misbourne chalk stream. Our picnic lunch will be on Denham Village Green; for drinks only, we have a choice of 3 pubs: the Swan, the Green Man, and the Falcon. After lunch we go eastward through the manicured greens of the Buckinghamshire Golf Club and then turn southward back to Uxbridge along the Grand Union Canal.