I only had one lot of Tamworth weaners so far so not an expert but electric fencing worked well for us.
I was moving them to a new piece of ground every couple of weeks (part of bracken clearing plan) so electric fence respect was crucial. We did it like this:
On arrival our 2 weaners were put in a 12x12 hurdle pen. After a week I set up 2 electric strands on the inside of one side of the hurdle pen (2x 6feet hurdles long). After another week I took that side of hurdles away (ie. 3 sides of hurdles, 1 side of electric, otherwise open). Another week later I replaced the rest of the hurdles with electric, eventually extending to a pen 25m x 30m which I moved every few weeks. I never had an escape except the 2nd week, digging under the hurdles (ha!) - they always respected the electric.