I can't really see the problem with this. £7 Million is too much??? how much does an average house cost these days in London? Extrapolate that upto a building that needs to hold thousands, plus other facilities to comply with planning laws, Think of the cost of buying the land, i'm thinking the mosque in question must only be a small-medium size. But either way it's money well spent. Only Allah and his prophet(pbuh) know better