Marlburian rather than War of the Spanish Succession, as most of the games we host for this period are of the Duke of Marlborough.
The rules we use are Black Powder with a Marlburian supplement from the Last Hussar, which work extremely well. As well as Beneath the Lilly Banners 2.
Hanoverians from the Wargames Foundry range.
With over 5,000 figures we can comfortably host any of the key battles, Blenheim, Ramillies, Oudenarde and Malplaquet.