currently have a macbook 2007, iPad 2 and iPhone 5. I'm not actually desperately loyal to Apple but liked what was available at the time I bought each of them and I do like the design of their products.
Go look at the both the MacBook Air and the current MacBook Pros. You say your location is London, there's a great Apple Store there in Regent Street (if memory serves).
You may be pleasantly surprised at what Apple have done since 2007.
Personally, because I prefer more options than less and I heavily use and abuse my laptops, I tend to favour the Pros, but the Airs are very popular in their own right.