I use onlineautomotive for my exhaust systems. For your 360 the full system (less the down pipe) should be under £90 (from their site). This would include all clamps and mounting clips/rings. Guaranteed for two years. Delivery could be by next working day (if selected) but in any event delivery is extra. During December they are offering a 15% discount.
www.onlineautomotive.co.uk is the site address. I have no connections with thwe company other than as a normal customer.