An Englishman's Castle

A very quick google on official local council websites for allotment sizes throws up proper old measurements being used:

Portsmouth Council Allotment Leaflet
Rental costs for an allotment are very modest and based on the size of the individual plot. A 10 rod plot works out at less than £1 a week and a 5 rod plot less than 50p a week.

SOUTH HOLLAND DISTRICT COUNCIL APPLICATION FORM ALLOTMENTS Allotment Size : 1 rood approx Rent :£37.45 per annum

Allotments Charges - Marlow Town Council
£3.20 per pole
A full size plot of 10 poles = £32.00 per annum
A half size plot of 5 poles = £16.00 per annum

Thanet District Council Allotments
The cost of an allotment ranges from £2.20 per perch...

Olveston Parish Allotment Association
The annual rental is £1.80 per lug

As Merton Council says; "A rod or perch, as it was also known, was a traditional Saxon land measure and survives in the twentieth century." (Though I note they are still using them in the 21st)

I suppose all these councils - and these are just a small sample - will be welcoming the Eu's banning of the acre and that none have been prosecuting anyone for using non metric measures....