Have used these guys several times.service is first class only problem is they use Parcelforce who charge u £12 for nothing, but they deliver right to your door. tax is the usual 20% but a STI short shift from them including delivery and tax still £235 compared to Subarus £450 +vat. if you choose priority Air its the fastest and is right to the door (by parcleforce) parts are genuine well at least the STI, Damd and Prova.
Can recommend buying a few bits as the admin cost from parceforce dosnt hurt so much