I found this list (from the babycentre website) to be helpful:

Cheeses which are SAFE to eat in pregnancy

Hard cheeses:
Austrian smoked, Babybel, Caerphilly, Cheddar, Cheshire, Derby, Double Gloucester, Edam, Emmental, English goat's cheddar, feta, Gouda, Gruyere, Halloumi, Havarti, Jarlsberg, Lancashire, Manchego, Orkney, paneer, Parmesan, Pecorino (hard), Provolone, Red Leicester.

Soft and processed cheeses:
Boursin, cottage cheese, cream cheese, feta, goat's cheese without a white rind, mascarpone, mozzarella, Philadelphia, processed cheese (such as cheese spread), Quark, ricotta.

Yoghurts (all varieties), probiotic drinks, fromage frais, soured cream and cr?me fra?che - any variety, including natural, flavoured and biologically active - are all safe to eat.

Cheeses to AVOID in pregnancy

Mould-ripened soft cheeses:
Brie, Blue Brie, Cambozola, Camembert, Chaumes, ch?vre (goats cheese with a white rind), Pont L'Eveque, Taleggio, Vacherin-Fribourgeois

Blue-veined cheeses:
Bergader, Bleu d'Auvergne, Blue Wensleydale, Shropshire Blue, Danish Blue, Dolcelatte, Gorgonzola, Roncal, Roquefort, Stilton, tomme, Wensleydale (blue).

Soft, unpasteurised cheese, including goat and sheep's cheeses:
Chabichou, Pyramide, Torta del Cesar.