Jill, 'The Sheds' have a very nice, prostrate growing golden thyme
labelled not-too helpfully 'Golden Thyme'. The one knocked out by B&Q
in their 'herb collections' is usually 'Archer's Gold' and its a
marvellous, colourful and fragrant mat former that withstands cold
winters and heavy clodhoppers with almost equal and surprising
alacrity. The small clusters of pale lavender flowers don't show up
too well, but the bright foliage will help you to forgive that
failing.

It's well worth hunting around a bit for Thymus serpyllum 'Pink
Chintz' too. Luckily, this variety seems to be quite widely available
and forms a neat matt that erupts into a foaming mass of bright pink
in early summer. You may feel tempted by those with deep red flowers,
but you need to be on your knees to appreciate the colour, so these
are probably best planted in raised beds. Pink or white flowers are
best for viewing from a non-stooping position.

When planting, it's best incorporate a couple of spadefuls of coarse
sand or grit into the soil plus a sprinkling of bonemeal. Top off with
a layer of grit, worked amongst the stems to prevent water-logging in
winter.