Cookies
We use cookies to keep your basket, sign-in and currency working, to take payments securely, and to understand how the shop is used.
Last updated 6 November 2026
Cookies the shop needs
| Name | Purpose | Lasts |
|---|---|---|
esm_cart |
Remembers the plan you're buying | 30 days |
esm_jwt |
Keeps you signed in | 7 days |
esm_order |
Lets you see the order you just placed | 2 hours |
esm_cur |
Remembers the currency you chose | 1 year |
esm_cc |
Your country, to show prices in your currency | 30 days |
Payments
Stripe's code loads only at checkout. Stripe then sets its own fraud-prevention cookies (such as __stripe_mid, 1 year), which are needed for a secure card payment.
Analytics
We measure how the shop is used so we can improve it, and which Microsoft (Bing) ads bring visitors.
| Name | Set by | Purpose | Lasts |
|---|---|---|---|
_wsv |
Our analytics | Recognises a returning visitor | 1 year |
_wss |
Our analytics | Groups one visit's pages | 30 minutes |
_wso |
Our analytics | Remembers if you opted out | 1 year |
_wsi |
Our analytics | Marks our own team's visits | 1 year |
_ga, _ga_<id> |
Google Analytics | Counts visitors and visits | 14 months |
_uetsid, _uetvid |
Microsoft Advertising | Measures visits and orders from Microsoft (Bing) ads | 1 day, 13 months |
You can block or delete cookies in your browser settings; the shop still works, but your basket and currency won't be remembered.