I need a good SPF for a weekend of sun, higher than 15 which is my normal daily SPF as I'll be sun bathing.
Have combination skin that easily gets congested despite being 50 
so nothing too heavy
On the list so far is the No7 Protect & Perfect SPF 30 or 50 or possibly La Roche-Posay Anthelios, both have good reviews
Any others I should look at? if it comes from boots then even better as they're giving loads of points away this weekend!