We are needing a long stretch of fencing around our allotment. But we really
need to keep the cost down as much as possible.

It does not have to look pretty, but must be *difficult* to climb, as we
have had a number of thefts on the allotment. We are not allowed to use any
barbed-wire.

Any suggestions as to what good inexpensive fencing is available with the
above requirements, we would be grateful for. Thanks.