I always loved a dollup of Branston Pickle in my cheese sandwiches. It can be found here but a tad expensive. However I have now replaced the BP with gerkin spread and other such delights.
The one thing I do miss is Quorn products. Although tofu is available in all sorts of manifestations I have to say Quorn is more versatile.
Have to say though, as someone that ate biscuits for living;), Arnotts are far better than McVities.:)