Spanish restaurants London: cross-culinary exchange. Picking a Spanish restaurant London has on offer is easy, with London’s Spanish population easily the highest in the UK. Spanish residents of London are concentrated in the west London districts of Kensington, Regent's Park and Chelsea, but there are many Spanish restaurants in London outside of these area. Besides, there is a rich history linking Spain with England. Intermarriages between the English and Spanish royals were numerous, with Catherine of Aragon being the first wife of the notorious Henry VIII and responsible for introducing Spanish culture to British courtly and popular life. It certainly looks like King Henry enjoyed his wife’s paella a little too much.