Just went back from 2 weeks holiday covering England, Wales, Ireland Republic, Northern Ireland and Scotland.
First stop was Legoland Windsor. The park was a bit outdated compared to Legoland Malaysia as it was build 20 years earlier but the fun is still there especially for kids.
Some advice if you want to save money:
1. Get coupons/vouchers from cereal boxes (got ourselves from Kellogg's) - usually free entrance for adult per paying child.
2. Stay around Heathrow airport, its only 30 minutes drive to Legoland.
p/s: During our stay at Heathrow, we discovered a small canteen that serving amazing briyani for £2.50! The canteen is called 'Holy Zam Zam'