To ensure you that you’re not spending a fortune on excess luggage, consider sending bulky items (winter clothes, golf clubs & surf boards etc) via sea freight. Using shipping companies from Australia or New Zealand you can ship items to the UK over a period of 3 months (approx.) for a fraction of the costs airlines will charge you for excess baggage.  To ship your goods you simply need to supply an address to send your items to, your shipping company may also be prepared to hold your goods in storage until you arrive to then deliver at a later date when have found a place to reside. There are a number of shipping companies that offer this service, I suggest using Google to search out a couple of options and get a quote on what it would cost to send your packages.

UK Working Holiday