Passport Stamps

I have previously discussed the stamp I get in my passport when entering the UK. A British reader writes, in part,

i would really like to see what the heathrow stamp looks like cus being from the uk when i re enter the country they don't stamp me i just wonder through,so i was wondering if you could maybe scan me your stamps(heathrow)

Happy to oblige!

Here is the stamp I used to get:



And here's the one that keeps my hand out of the public till:



Sorry for the poor quality of the images, but they correspond to poor originals. The UK seems to use the cheapest ink imaginable.