Eye drops in London UK

Hi,

I had Lasik surgery 2 1/2 months ago and things are great. I am now travelling and will be in London for a while. I realized I forgot to pack enough drops and now I need to buy drops in London to last me for the next few months.

When I was back in the states, I used Refresh Optive and Blink tears (Dr. gave me samples and after a while Blink worked better). Can any of you suggest a UK specific post-lasik lubricating tears please? My doctor office just suggested a non-contact lens artificial tears. I found an eye drop named Blink here as well, but figured would try here before buying.

Thanks!