A non-executive director at Walker Crips bought some shares in the group one month after announcing a £4.2m investment in a London-based wealth firm.Lim Hua Min bought 4442,766 shares through connected persons who are members of his family, spending £194,861.Following the purchase, Lim holds 9.5m shares in the investment management group.The group said last month it acquired Barker Poland Asset Management, which holds £229 of assets under management.Chief executive Rodney Fitzgerald said the purchase will increase the capacity of its London stronghold and regional expansion.Top Director BuysWalker Crips Group (WCW) Director name: Mr H.M. LimAmount purchased: 442,766 @ 44.01p Value: £194,861Sierra Rutile Ltd (SRX) Director name: Mr Richard Lloyd Lister Amount purchased: 250,000 @ 17.24p Value: £43,100Amerisur Resources (AMER) Director name: Mr Nigel Luson Amount purchased: 100,000 @ 30.50p Value: £30,500TyraTech Inc. (Reg S) (TYR) Director name: Mr Alan ReadeAmount purchased: 588,740 @ 5.15p Value: £30,320Henderson EuroTrust (HNE) Director name: Mr David MarshAmount purchased: 3,227 @ 929.40p Value: £29,992Hutchison China Meditech Ltd (HCM) Director name: Mr Christopher NashAmount purchased: 1,388 @ 1,800.00p Value: £24,984Sierra Rutile Ltd (SRX) Director name: Mr Michael BrownAmount purchased: 80,000 @ 17.23p Value: £13,784Top Director SellsTyraTech Inc. (Reg S) (TYR) Director name: Mr Alan ReadeAmount sold: 555,780 @ 5.14p Value: £28,567Dairy Farm International Holdings Ltd. (Singapore) (DFI) Director name: Mr Michael KokAmount sold: 1,900 @ $9.42 Value: $17,895